Definitions

• Herbal Therapies
  
• H
  
• H-pylori
  
• H. pylori -
  Helicobacter pylori. Bacteria that cause inflammation and ulcers in the stomach.
• H.P. Acthar Gel
  
• H2 Blockers
  These medications block the production of acid from the stomach. Examples are Tagamet(cimetidine), Pepcid (famotidine),Axid(nizatidine), and Zantac (ranitidine) etc.. These originally were developed and made available for use in the late 1970s. This group of medications is commonly used for treating ulcers and GERD. It is less effective in some patients for treating GERD. ...
• HAART -
  Highly active antiretroviral therapy. Treatment for human immunodeficiency virus (HIV) infection that uses a combination of several antiretroviral drugs. The drugs inhibit the ability of the virus to multiply in the body, and they slow down the development of AIDS.
• Habitrol
  
• Haemophilus ducreyi Infection
  
• Haemophilus influenzae Serotype b (Hib) Infection
  
• Haemophilus Influenzae type b Conjugate Vaccine
  
• Hagedorn
  Friedrich von Hagedorn (April 23, 1708 - October 28, 1754), German poet, was born at Hamburg, where his father, a man of scientific and literary taste, was Danish minister.
• Hair
  Hair is the filamentous outgrowth of the epidermis found in mammals. It is a characteristic of all mammals, though in some species hair is absent at certain stages of life. "Hairs" are also found on plants, the technical term for which is trichomes (see for further discussion of plant hairs).
• Hair analysis
  Hair analysis is the chemical analysis of a hair sample.
• Hair Diseases and Hair Loss
  
• Hair Disorders
  
• hair follicle - FOL-i-kul
  A shaft or opening on the surface of the skin through which hair grows.
• Hair Growth, Excessive
  
• Hair loss
  Baldness (formally alopecia) is the state of lacking hair where it usually would grow, especially on the head. The most common form of baldness is a progressive hair-thinning condition that occurs in adult humans and other primate species.
• hairy cell leukemia -
  A rare type of leukemia in which abnormal B-lymphocytes (a type of white blood cell) are present in the bone marrow, spleen, and peripheral blood. When viewed under a microscope, these cells appear to be covered with tiny hair-like projections.
• Haiti
  Haiti is a country situated on the western third of the island of Hispaniola and the smaller islands of La Gonâve, La Tortue (Tortuga), Grande Caye, and Ile a Vache in the Caribbean Sea, east of Cuba; the Dominican Republic shares Hispaniola with Haiti. Its total land area is 10,714 square miles (27,750 square km) and its capital is Port-au-Prince on the main island of Hispaniola.
• Halcinonide Topical
  
• Halcion
  Triazolam (Halcion®, Novodorm®, Songar®) belongs to benzodiazepine group of drugs. It is commonly prescribed for insomnia, and its short half-life (approximately 3 hours) makes it ideal for this use because it thereby avoids morning drowsiness.
• Haldol Decanoate Injection
  
• Haldol Injection
  
• Haldol Oral Concentrate
  
• Haldol Tablets
  
• Halfan
  
• Hallervorden-Spatz Disease
  A slowly progressive hereditary disorder characterized by abnormal accumulations of iron pigments in certain regions of the basal ganglia (eg, globus pallidus and substantia nigra). This autosomal recessive disorder typically becomes apparent during late childhood or adolescence. ...
• Halls Zinc Defense
  
• Halobetasol
  
• Halofantrine
  
• halofuginone hydrobromide -
  A substance that is being studied for its ability to slow the growth of connective tissue and prevent the growth of new blood vessels to a solid tumor. It belongs to the family of drugs called quinazolinone alkaloids.
• Halog
  
• Halog-E
  
• Haloperidol
  Haloperidol (Aloperidin®; Bioperidolo®; Brotopon®; Dozic®; Einalon S®; Eukystol®; Haldol®; Halosten®; Keselan®; Linton®; Peluces®; Serenace®; Serenase®; Sigaperidol®) is a conventional butyrophenone antipsychotic drug. It was developed in 1957 by Belgian company Janssen and submitted to first clinical trials in Belgium in the same year. ...
• Haloperidol Decanoate Injection
  
• Haloperidol Lactate Injection
  
• Haloperidol Oral Concentrate
  
• Haloperidol Tablets
  
• Halothane
  Halothane vapour is an inhalational general anaesthetic. Its systematic name is 2-Bromo-2-chloro-1,1,1-trifluoroethane.
• Halotussin AC
  
• Halotussin DM Sugar Free Syrup
  
• Halotussin DM Syrup
  
• Halsted radical mastectomy -
  Surgery for breast cancer in which the breast, chest muscles, and all of the lymph nodes under the arm are removed. For many years, this was the breast cancer operation used most often, but it is used rarely now. Doctors consider radical mastectomy only when the tumor has spread to the chest muscles. Also called radical mastectomy.
• hamartoma - ham-ar-TOE-ma
  A benign (noncancerous) growth made up of an abnormal mixture of cells and tissues normally found in the area of the body where the growth occurs.
• Hammertoe and mallet toe
  
• Hammertoes
  
• Hamptons Diet
  
• Hand
  The hand (med./lat.: manus) is a portion of the arm or anterior limb of a human or other primate, at where the appendage terminates. This part of the limb is especially used in grasping and holding. Each hand is a mirror image of the other.
• Hand Hygiene in Healthcare Settings
  
• Hand Injuries and Disorders
  
• Hand Pain
  
• Hand Problems
  
• Hand, Foot, and Mouth Disease
  
• hand-foot syndrome -
  A condition marked by pain, swelling, numbness, tingling, or redness of the hands or feet. It sometimes occurs as a side effect of certain anticancer drugs. Also known as palmar-plantar erythodysthesia.
• Hand-foot-and-mouth disease
  
• Hand-foot-mouth disease
  Hand, foot and mouth disease (HFMD) is a human syndrome caused by intestinal viruses of the Picornaviridae family. ...
• Handball
  Team handball (also known as field handball or Olympic handball) is a team sport where two teams of seven players each (six players and a goalkeeper) pass and bounce a ball trying to throw it in the goal of the opposing team.
• Hands
  The hand (med./lat.: manus) is a portion of the arm or anterior limb of a human or other primate, at where the appendage terminates. This part of the limb is especially used in grasping and holding. Each hand is a mirror image of the other.
• Hansen's Disease
  Leprosy, sometimes known as Hansen's disease, is an infectious disease caused by Mycobacterium leprae, an aerobic, acid fast, rod-shaped mycobacterium. The modern term for the disease is named after the discoverer of the bacterium, Gerhard Armauer Hansen.
• Hantavirus Infections
  
• Hantavirus Pulmonary Syndrome
  Hantavirus is one of the four genera of the family Bunyaviridae. Hantaviruses are spread by rodents and target the kidneys, lungs or pulmonary system, and heart. The word Hantavirus is derived from the Hantaan River, where the Hantaan virus (the etiologic agent of Korean hemorrhagic fever) was first isolated. The disease associated with Hantaan virus is called Korean hemorrhagic fever or hemorrhagic fever with renal syndrome (HFRS).
• Hard Drug Addiction
  
• hard palate - PAL-et
  The front, bony part of the roof of the mouth.
• Hardening of the Arteries
  Atherosclerosis is a disease of arterial blood vessels. Veins are not involved unless surgically moved to function as an artery. Atherosclerosis is commonly referred to as a "hardening of blood vessels", but this is an over-simplification. Vascular lesions known as atheromatous plaques or atheromata (singular: atheroma) are formed in the vessel wall, and in late stages may reduce or restrict blood flow in the lumen. ...
• Harmful Algal Blooms
  
• Harmful or violent behavior toward self or others
  
• Havrix
  Trademark for a Hepatitis A Vaccine, made by the pharmaceutical company GlaxoSmithKline
• Hawaii
  Hawaii (Hawaiian/Hawaiian English: Hawai‘i, with the ‘okina) is the archipelago of the Hawaiian Islands in the Pacific Ocean. Hawaii constitutes the 50th state of the United States, and as of the 2000 U.S. Census had a population of 1,211,537 people. Honolulu is the largest city and the state capital.
• Hawaii Diet
  
• Hawthorn
  Hawthorn is the name of a large group of shrubs and small trees in the genus Crataegus, family Rosaceae, characterized by their small, apple-like fruits and thorny branches. The fruits are sometimes known as 'haws', from which the name derived. The original name was applied to the species native to northern Europe, especially the Common Hawthorn, C. monogyna, but is now applied to the entire genus. They are native to the temperate northern hemisphere. ...
• hawthorn fruit -
  The fruit of the hawthorn tree or bush. It has been used in some cultures to treat certain medical problems, including heart problems and gastrointestinal problems.
• Hay Diet
  
• Hay Fever
  Hay Fever is a comic play written by Noel Coward in 1924 and first produced in 1925. Best described as a cross between high farce and a comedy of manners, the play is set in a British country house in the 1920s, and deals with the four eccentric members of the Bliss family and their outlandish behaviour when they each invite a guest to spend the weekend. ...
• Hayfever
  Allergic rhinitis, also called pollinosis, hay fever or nasal allergies, is a collection of symptoms, predominantly in the nose and eyes, that occur after exposure to airborne particles of dust, dander, or the pollens of certain seasonal plants in people who are allergic to these substances.
• Hazardous Waste
  Hazardous waste is waste that poses substantial or potential threats to public health or the environment and generally exhibits one or more of these characteristics:*ignitability*corrosivity*reactivity (explosive)*toxicity
• Hazardous Waste / Toxic Chemicals
  
• Hazardous Waste Sites
  
• Hürthle cell neoplasm - HER-tel cell
  An uncommon type of thyroid tumor that can be benign or malignant.
• HC Tussive D Syrup
  
• HCA
  The Hospital Corporation of America (HCA) is the largest private operator of health care facilities in the world. It is based in Nashville, Tennessee, United States and is widely considered to be the single largest factor in making that city a hotspot for healthcare enterprise.
• hCG
  HCG may stand for
• HDL
  HDL is an initialism that may refer to any of the following: * High density lipoprotein* Hardware description language
• He Shou Wu
  
• Head and Brain Injuries
  
• Head and Brain Malformations
  
• head and neck cancer -
  Cancer that arises in the head or neck region (in the nasal cavity, sinuses, lip, mouth, salivary glands, throat, or larynx [voice box]).
• Head and Shoulders Intensive Treatment Dandruff Shampoo
  
• Head Injury
  Head injury is a trauma to the head, that may or may not include injury to the brain (see also brain injury).The incidence of head injury is 300 per 100 000 per year (0.3%), with a mortality of 25/100 000 in North America and 9/100 000 in Britain.
• Head Lice
  Head lice (Pediculus humanus capitis) are one of the many varieties of sucking lice (singular "louse") specialized to live on different areas of various animals.
• Headache
  A headache is a condition of mild to severe pain in the head; sometimes upper back or neck pain may also be interpreted as a headache.
• Headache, Migraine
  
• Headache, Sinus
  
• Headache, Tension
  
• Headaches that interfere with daily activities
  
• Headaches, Children
  
• Healer
  A healer is a practitioner of alternative health practices who works with, rather than against, the natural self-healing properties of the body. Healers are said to heal because all healing comes from within the body rather from external treatments.
• Healing touch
  an energy (biofield) therapy that encompasses a group of non-invasive techniques that utilize the hands to clear, energize, and balance the human and environmental energy fields. With some similarities to Reiki, Healing Touch offers more techniques for physical, emotional and spiritual balancing.
• Health
  Health can be defined negatively, as the absence of illness, functionally, as the ability to cope with everyday activities, or positively, as fitness and well-being.In any organism, health is a form of homeostasis. This is a state of balance, with inputs and outputs of energy and matter in equilibrium (allowing for growth). Health also implies good prospects for continued survival. In sentient creatures such as humans, health is a broader concept.
• Health Aspects of Walking
  
• Health Care
  Health care or healthcare is an industry associated with the provision of medical care to individuals. It is one of the world's largest and fastest-growing professions, consuming over 10 percent of gross domestic product of most developed nations.
• Health Care Access
  
• Health Care Delivery
  One of the functions of the health system, which deals with the medical and therapeutic measures intended to preserve or improve the health condition of a patient.
• Health Disparities
  Health disparities refer to gaps in the quality of health and health care across racial and ethnic groups. The Health Resources and Services Administration defines health disparities as "population-specific differences in the presence of disease, health outcomes, or access to health care."
• Health Education And Training
  
• Health Facilities
  
• Health Fraud
  Quackery is the practice of fraudulent medicine, usually in order to make money or for ego gratification and power. Those who practise quackery are called "quacks" and are in the business of selling false hope to ill-informed people who may be genuinely suffering. Most would consider such a practice highly unethical.
• Health Information
  Any information, whether oral or recorded in any form or medium, that: is created or received by a health care provider, health plan, public health authority, employer, life insurer, school or university, or health care clearinghouse; and relates to the past, present, or future physical or mental health or condition of an individual, the provision of health care to an individual, or the past, present, or future payment for the provision of health care to an individual.(49)
• Health Insurance
  Health insurance is a type of insurance whereby the insurer pays the medical costs of the insured if the insured becomes sick due to covered causes, or due to accidents. The insurer may be a private organization or a government agency. Market-based health care systems such as that in the United States rely on private medical insurance.
• Health Occupations
  
• Health Plans
  
• Health Professions Development
  
• Health Promotion
  Health Promotion is a strategy for improving the health of the population by providing individuals, groups and communities with the tools to make informed decisions about their well-being. Moving beyond the traditional treatment of illness and injury, health promotion efforts are centred primarily on the social, physical, economical and political factors that affect health, and include such activities as the promotion of physical fitness, healthy living and good nutrition. ...
• Health Promotion / Disease Prevention / Safety
  
• Health psychology
  Health psychology is the 'use of psychological principles to promote health and to prevent illness' (Taylor, 1990). In other words, health psychology uses the knowledge and ideas from psychology to cut down on health risk factors, and promote healthy behaviors. Health risk factors include things like stress, overeating, and putting yourself in danger, including, for instance, not buckling one's seat belt, habits that increase chances of contracting illnesses. ...
• Health Services Research
  studies of the organization, delivery, and financing of health care
• Health Statistics
  
• Health System
  
• Health Topics
  What is diabetes mellitus Possible causes Are you at risk? Can diabetes be prevented?
• Health-Related Quality of Life
  Patient outcome measures that extend beyond traditional measures of mortality and morbidity, to include such dimensions as physiology, function, social activity, cognition, emotion, sleep and rest, energy and vitality, health perception, and general life satisfaction. (Some of these are also known as health status, functional status, or quality of life measures.)
• Healthcare Workers
  
• Healthcare-Related Infections
  
• Healthy Heart Diet
  
• Healthy Living
  
• Healthy People 2000
  
• Healthy People 2010
  a Department of Health and Human Services initiative that provides benchmarks for the progress of the health of Americans for the next 10 years, with supporting objectives in disease prevention and health promotion.
• Healthy Soy Plan
  
• Healthy Swimming
  
• Healthy Youth
  
• Hearing Disorders & Deafness
  
• Hearing Disorders and Deafness
  
• Hearing Impairment
  Hearing impairment or deafness is decreased or absent ability to perceive auditory information. While some cases of hearing loss are reversible with medical treatment, many lead to a permanent disability. Of vital importance are the age at which the hearing loss occurred, as this may interfere with the acquisition of spoken language. Hearing aids and cochlear implants may alleviate some of the barriers caused by hearing impairment, but are often insufficient. ...
• Hearing Loss
  Hearing impairment or deafness is decreased or absent ability to perceive auditory information. While some cases of hearing loss are reversible with medical treatment, many lead to a permanent disability. Of vital importance are the age at which the hearing loss occurred, as this may interfere with the acquisition of spoken language. Hearing aids and cochlear implants may alleviate some of the barriers caused by hearing impairment, but are often insufficient. ...
• Hearing Loss and Older Adults
  
• Hearing Problems in Children
  
• Hearing, Ear Infections, and Deafness
  
• Hearing, Speech, and Language Problems in Children
  
• Heart
  The heart (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. The term cardiac means "related to the heart", from the Greek kardia (καρδια) for "heart".
• Heart and Circulation
  
• Heart arrhythmias
  
• Heart arrhythmias (rare)
  Arrhythmias are disorders of the regular rhythmic beating of the heart. Arrhythmias are a common condition and can occur in a healthy heart and be ...
• Heart attacks
  The Heart Attacks are a Glam punk band from Atlanta, Georgia, and are currently signed to Tim Armstrong's Hellcat Records. In April/May 2007 the band toured throughout the southern United States as part of a Hellcat Records package tour. ...
• Heart Bypass Surgery
  A coronary artery bypass graft (CABG) or heart bypass. it was invented in Argentina by René Favaloro and it is a surgical procedure performed in patients with coronary artery disease (see atherosclerosis) for the relief of angina and possible improved heart muscle function. ...
• Heart Bypass Surgery/Angioplasty
  
• Heart Defects
  A congenital heart defect is a defect in the structure of the heart and great blood vessels of the newborn.
• Heart Disease in Women
  Diseases of the heart and circulatory system kill over half a million women every year. Approximately 35 percent of heart attacks in women go unnoticed or unreported. This is because some women and their doctors do not always take heart disease symptoms seriously, and also because women's symptoms are sometimes more subtle than men's. Read more.
• Heart Diseases
  Several foodborne pathogens such as E. coli and Staphylococcus have been directly and indirectly linked to endocarditis and myocarditis which both lead to permanent heart damage.
• Heart Infection, Pericarditis
  
• Heart Medications
  
• Heart muscle damage
  
• Heart Rate Monitors
  
• Heart Smart Plan
  
• Heart Surgery
  Cardiac surgery is surgery on the heart, typically to correct congenital heart disease or the complications of ischemic heart disease or valve problems created by various causes including endocarditis.
• Heart Transplantation
  An organ transplant is the transplantation of a whole or partial organ from one body to another, for the purpose of replacing the recipient's damaged or failing organ with a working one from the donor. Organ donors can be living, or cadaveric (dead).
• Heart Valve Diseases
  
• Heat Exhaustion
  Hyperthermia, also known as heat stroke or sunstroke is an acute condition resulting from excessive exposure to heat. The homeothermal regulatory mechanisms become overwhelmed and unable to effectively deal with the heat, and body temperature climbs uncontrollably. This is a serious medical emergency that requires immediate hospitalization. Body temperatures above 40°C (104°F) are considered life-threatening. ...
• Heat Illness
  Debilitating condition brought on by exposure to heHat stress and including heat rash, heat syncope (heat collapse), heat exhaustion, heat stroke, neurological disorders (ie, nausea, loss of coordination, lethargy, concentration lapses) and dehydration.
• Heat Injury
  
• Heat Stress
  The sum of environmental and metabolic heat loads on the individual (Lyne, B, 1999).
• Heat-Related Illness
  
• Heavy periods
  (back to top) This means having heavier bleeding than is normal for a particular woman during her period.
• Hectorol Injection
  
• Hedeoma pulegioides
  pennyroyal: erect hairy branching American herb having purple-blue flowers; yields an essential oil used as an insect repellent and sometimes in folk medicine
• Hedyotis diffusa -
  An herb used in traditional Chinese medicine to treat certain medical problems. It has been used to boost the immune system and may have anticancer effects.
• Heel
  The heel is the prominence at the posterior end of the foot. It is based on the projection of one bone, the calcaneum, behind the articulation of the bones of the lower leg. In the long-footed mammals, both the hoofed species (unguligrade) and the clawed forms which walk on the toes (digitigrade), the heel is well above the ground at the apex of the angular joint known as the hock. In plantigrade species it rests on the ground. ...
• Heel Injuries and Disorders
  
• Heel pain
  
• Heel Spur
  A hard bony shelf as wide as the width of the heelbone caused by repeated pulling away of periosteum from the heelbone (calcaneous). The repeated stress or injury causes inflammation and calcification of tendons and ligaments in the foot.
• helical computed tomography -
  A detailed picture of areas inside the body. The pictures are created by a computer linked to an x-ray machine that scans the body in a spiral path. Also called spiral CT scan.
• Helicobacter pylori - HEEL-ih-ko-BAK-ter pye-LOR-ee
  H. pylori. Bacteria that cause inflammation and ulcers in the stomach.
• Helidac
  
• helper T cell -
  A type of white blood cell that helps stimulate immune system reactions. Helper T cells help activate cytotoxic T cells and macrophages by secreting cytokines. They also stimulate B cells to make antibodies.
• hemagglutinin-neuraminidase -
  A protein found in the outer coat of paramyxoviruses. This protein helps virus particles bind to cells, making infection easier.
• hemangiopericytoma -
  A type of cancer involving blood vessels and soft tissue.
• hemangiosarcoma -
  A type of cancer that begins in the cells that line blood vessels.
• Hematocrit
  The hematocrit (Ht) or packed cell volume (PCV) is the proportion of blood volume that is occupied by red blood cells. It is normally between 0.35 and 0.52, and slightly higher on average in males.
• hematogenous -
  Originating in the blood or spread through the bloodstream.
• hematologic malignancy -
  A cancer of the blood or bone marrow, such as leukemia or lymphoma. Also called hematologic cancer.
• hematologist - hee-ma-TOL-o-jist
  A doctor who specializes in treating blood disorders.
• Hematoma
  A hematoma, or haematoma, is a collection of blood, generally the result of hemorrhage. Hematomas exist as bruises (ecchymoses), but can also develop in organs.
• hematopoiesis -
  The forming of new blood cells.
• hematopoietic growth factor -
  A group of proteins that causes blood cells to grow and mature.
• hematopoietic tissue -
  Tissue in which new blood cells are formed.
• hematoporphyrin derivative -
  A drug used in photodynamic therapy that is absorbed by tumor cells. When exposed to light, it becomes active and kills the cancer cells.
• Hematuria
  In medicine, hematuria is the presence of blood in the urine. It is a sign of a large number of diseases of the kidneys and the urinary tract, ranging from trivial to lethal.
• Hematuria: Blood in the Urine
  
• Hemicrania Continua
  
• hemilaryngectomy - HEM-ee-LAIR-in-JEK-tuh-mee
  An operation to remove one side of the larynx (voicebox).
• Hemin
  a reddish-brown chloride of heme; produced from hemoglobin in laboratory tests for the presence of blood
• Hemochromatosis
  Hemochromatosis is a disorder that causes the body to absorb too much iron from the diet. The excess iron is stored in the body's tissues and organs, particularly the heart, liver, pancreas, and joints. Because humans cannot increase excretion of iron, the extra iron accumulates over time and eventually can damage the tissue or organ. Genetic changes are related to the following types of hemochromatosis. hemochromatosis, neonatal hemochromatosis, type 1 hemochromatosis, type 2 hemochromatosis, type 3 hemochromatosis, type 4 The signs and symptoms of hemochromatosis result from damage to tissues and organs that experience an overload of iron. For example, iron deposits in the joints can cause joint pain. In the most common form of hemochromatosis (type 1), early symptoms are nonspecific and may include fatigue, joint pain, abdominal pain, impotence, and loss of sex drive. Later signs and symptoms include arthritis, liver disease, diabetes, heart abnormalities, and skin discoloration. The age of onset for symptoms varies with the type of hemochromatosis, from newborn (neonatal hemochromatosis) to midlife (type 1 hemochromatosis).
• Hemochromatosis, neonatal
  Neonatal hemochromatosis is a rare iron storage disorder with onset beginning before birth. As with other types of hemochromatosis, excess iron is deposited in the liver, pancreas, heart, endocrine glands, and other tissues. Neonatal hemochromatosis progresses rapidly and is characterized by liver damage that is apparent at birth or in the first day of life. Hemochromatosis, neonatal is a subtype of hemochromatosis. Infants with neonatal hemochromatosis often are stillborn, premature, or born smaller than other full-term infants. End-stage liver disease is generally apparent at birth, even in premature infants. Features of liver failure include low blood sugar, yellowing of the eyes and skin (jaundice), blood clotting disorders, a low number of red blood cells (anemia), and accumulation of fluid (ascites) in the abdomen.
• Hemochromatosis, type 2
  All disorders described as hemochromatosis cause the body to store too much iron. In hemochromatosis, type 2, which is also called juvenile hemochromatosis, iron accumulation begins early in life, and symptoms are present before the age of 30 years. Men and women are affected equally. Hemochromatosis, type 2 is a subtype of hemochromatosis. The signs and symptoms of juvenile hemochromatosis are similar to those of the adult types of the disorder, but iron accumulation begins early in life and is rapid. Abdominal discomfort or pain is the primary complaint in the first decade of life. Nonspecific symptoms such as weakness, fatigue, weight loss, and nausea are also present in early stages of the disorder. A grey-brownish skin discoloration can also be present in early childhood. By the age of 20, decreased or absent secretion of sex hormones is evident. Females usually begin menstruation in a normal manner, but menses stop after a few years. Males may experience delayed puberty or sex hormone deficiency symptoms such as impotence. If the disorder is untreated, heart disease is evident by age 30. Heart failure or disturbances of heart rhythm are usually the cause of death if the disease is not treated. Liver damage and diabetes are less frequent than in type 1 hemochromatosis.
• Hemochromatosis, type 3
  Hemochromatosis is a disorder that causes the body to absorb and store too much iron. The excess iron is stored in the body's tissues and organs, particularly the heart, liver, pancreas, and joints. Type 3 hemochromatosis is very similar to type 1 hemochromatosis, but these disorders are caused by mutations in different genes. Genetic testing is necessary to distinguish type 3 from type 1. Hemochromatosis, type 3 is a subtype of hemochromatosis. The signs and symptoms for type 3 hemochromatosis are similar to those of the more common type 1 hemochromatosis, but symptoms of type 3 can begin before the age of 30 years. Early symptoms can include fatigue, joint pain, abdominal pain, impotence, and loss of sex drive. As the disease progresses, patients may experience more serious conditions such as liver disease, diabetes, and heart abnormalities.
• Hemochromatosis, type 4
  Similar to other types of hemochromatosis, type 4 causes excess storage of iron in the body's tissues and organs, particularly the liver. Type 4 hemochromatosis is characterized by a dominant inheritance pattern, which means the disorder is found in each generation of a family. Hemochromatosis, type 4 is a subtype of hemochromatosis. The signs and symptoms of type 4 hemochromatosis are similar to those of other hemochromatosis disorders and can include joint pain, fatigue, decreased production of sex hormones, and liver disease. A distinguishing feature of type 4 hemochromatosis is the early accumulation of iron in specialized cells called reticuloendothelial cells within the liver, spleen, and bone marrow. Also, compared to individuals with other types of hemochromatosis, people with type 4 have normal or closer-to-normal values for serum transferrin saturation, a blood test which indicates the amount of iron carried in the bloodstream.
• Hemodialysis
  In medicine, dialysis is a method for removing waste such as urea from the blood when the kidneys are incapable of this, i.e. in renal failure.
• Hemodialysis Dose and Adequacy
  
• Hemodialysis/dialysis
  
• hemoglobin - HE-muh-GLOW-bun
  The substance inside red blood cells that binds to oxygen and carries it from the lungs to the tissues.
• Hemoglobin H Disease
  
• Hemoglobin SS Disease
  
• Hemoglobin Variants
  
• Hemolytic Uremic Syndrome
  In medicine, hemolytic-uremic syndrome (or haemolytic-uraemic syndrome, abbreviated HUS) is a disease characterised by microangiopathic hemolytic anemia, acute renal failure and a low platelet count (thrombocytopenia).
• hemophilia -
  Group of hereditary disorders in which affected individuals fail to make enough of certain proteins needed to form blood clots.
• hemorrhage -
  In medicine, loss of blood from damaged blood vessels. A hemorrhage may be internal or external, and usually involves a lot of bleeding in a short time.
• Hemorrhagic Fevers
  
• hemorrhoid - HEM-uh-roid
  An enlarged or swollen blood vessel, usually located near the anus or the rectum.
• Hemorrhoidal HC
  
• Hemorrhoids
  Hemorrhoids (also haemorrhoids or piles) are varicosities or swelling and inflammation of veins in the rectum and anus.
• Hemril-HC Uniserts
  
• Hendra virus Infection
  
• heparin -
  A drug that helps prevent blood clots from forming. It belongs to the family of drugs called anticoagulants (blood thinners).
• Heparin Injection
  
• hepatectomy -
  Surgery to remove all or part of the liver.
• hepatic -
  Refers to the liver.
• hepatic arterial infusion -
  A procedure to deliver chemotherapy directly to the liver. Catheters are put into an artery in the groin that leads directly to the liver, and drugs are given through the catheters.
• hepatic artery -
  The major blood vessel that carries blood to the liver.
• Hepatic Fibrosis
  Scarring of the liver
• hepatic portal vein -
  A short blood vessel that carries blood to the liver from the stomach and intestine.
• hepatic veno-occlusive disease -
  A condition in which some of the veins in the liver are blocked. It is sometimes a complication of high-dose chemotherapy given before a bone marrow transplant and is marked by increases in weight, liver size, and blood levels of bilirubin.
• hepatitis - hep-a-TYE-tis
  Disease of the liver causing inflammation. Symptoms include an enlarged liver, fever, nausea, vomiting, abdominal pain, and dark urine.
• Hepatitis A
  Hepatitis A is a disease affecting the liver, and caused by the Hepatitis A virus (abbreviated HAV). Only 3 out of 4 people with hepatitis A have symptoms. Those symptoms may include:* Jaundice (showing up first as yellow eyes)* Dark urine* Nausea* Fever* Tiredness* Loss of appetite* Stomach ache* Vomiting
• Hepatitis A and Hepatitis B Vaccine
  
• Hepatitis A Vaccine
  
• Hepatitis B
  Originally known as serum hepatitis, Hepatitis B has only been recognized as such since World War II, and has caused current epidemics in parts of Asia and Africa. Hepatitis B is recognized as endemic in China and various other parts of Asia. Over one-third of the world's population has been or is actively infected by hepatitis B virus (acronym HBV).
• Hepatitis B Immune Globulin
  HBIG is a vaccine used for prevention of Hepatitis B infection.
• Hepatitis B Vaccine
  The vaccine against hepatitis B, a virus that affects primarily the liver. This series of three shots, given between birth and 2 weeks and at 2 and 6 months, may cause fussiness, low-grade fever,headache, and soreness at the injection site.
• hepatitis B virus -
  A virus that causes hepatitis (inflammation of the liver). It is carried and passed to others through blood or sexual contact. Also, infants born to infected mothers may become infected with the virus.
• Hepatitis C
  Hepatitis C is a form of hepatitis (liver inflammation) caused by a virus, the Hepatitis C virus (HCV). Before the virus was discovered, in 1989, the syndrome was initially referred to as a "non-A-non-B hepatitis".
• hepatitis C virus -
  A virus that causes hepatitis (inflammation of the liver). It is carried and passed to others through blood or sexual contact. Also, infants born to infected mothers may become infected with the virus.
• Hepatitis D
  Hepatitis D, also referred to as Hepatitis D virus (HDV) and classified as Hepatitis delta virus, is a disease caused by a small circular RNA ...
• Hepatitis Series
  
• Hepatitis Vaccines
  
• Hepatitis, Viral
  
• hepatoblastoma - HEP-a-toe-blas-TOE-ma
  A type of liver tumor that occurs in infants and children.
• Hepatocellular
  
• Hepatocellular (Liver) Cancer
  
• hepatocellular carcinoma - HEP-a-toe-SEL-yoo-ler kar-sin-O-ma
  A type of adenocarcinoma, the most common type of liver tumor.
• hepatocyte - HEP-a-toe-site
  A liver cell.
• Hepatoerythropoietic porphyria
  Hepatoerythropoietic porphyria is a rare type of porphyria that mainly affects the skin. The disorder results from very low levels of the enzyme responsible for the fifth step in heme production. Heme is a vital molecule for all of the body's organs. It is a component of hemoglobin, the molecule that carries oxygen in the blood. Hepatoerythropoietic porphyria is a subtype of porphyria. Most signs and symptoms of this type of porphyria are very similar to those of congenital erythropoietic porphyria, resulting from the skin becoming overly sensitive to sunlight. The signs and symptoms usually begin during infancy or childhood. Areas of skin exposed to the sun develop severe blistering, infections, scarring, changes in pigmentation, and increased hair growth. Other signs of the condition include a low number of red blood cells (anemia) and enlargement of the spleen.
• hepatoma - hep-a-TOE-ma
  A liver tumor.
• hepatomegaly -
  Enlarged liver.
• Her-2/neu
  Also called ErbB2, HER-2/neu belongs to the EGFR family and is overexpressed in several solid tumors. Like EGFR, it is a tyrosine kinase receptor whose activation leads to proliferative signals within the cells. On activation, the HER family of receptors are known to form homodimers and heterodimers, each with a distinct signaling activity. ...
• HER1 -
  Epidermal growth factor receptor. The protein found on the surface of some cells and to which epidermal growth factor binds, causing the cells to divide. It is found at abnormally high levels on the surface of many types of cancer cells, so these cells may divide excessively in the presence of epidermal growth factor. Also known as EGFR or ErbB1.
• HER2/neu -
  Human epidermal growth factor receptor 2. The HER2/neu protein is involved in the growth of some cancer cells. Also called c-erbB-2.
• HER2/neu gene -
  The gene that makes the human epidermal growth factor receptor 2. The protein produced is HER2/neu, which is involved in the growth of some cancer cells. Also called c-erbB-2.
• Herba de la pastora
  
• herba scutellaria barbatae -
  An herb used in traditional Chinese medicine to treat certain medical problems. It may have anticancer effects.
• Herbal and Plant Products
  
• Herbal crystallization analysis
  
• Herbal Phen-Fen
  A combination of St. Johns Wort and Ma Huang (ephedra). There are no studies to show this works.
• Herbal Remedies
  The term Herbalism refers to folk and traditional medicinal practice based on the use of plants and plant extracts. Herbalism is also known as phytotherapy.
• Herbal Supplements
  
• Herbal therapy
  The term Herbalism refers to folk and traditional medicinal practice based on the use of plants and plant extracts. Herbalism is also known as phytotherapy.
• Herbalife
  Founded in 1980, Herbalife International is a company that sells weight-loss and health products through infomercials and multi-level marketing methods through distributorships. Distributors make money from retailing, and a residual income from their downlines' retail sales volume.
• Herbalife Diet
  
• Herbalism
  Herbalism is the practice of making or prescribing herbal remedies for medical conditions.
• herbicide -
  A chemical that kills plants.
• Herbicides
  A herbicide is a pesticide used to kill unwanted plants. Selective herbicides kill certain targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often based on plant hormones. Herbicides used to clear waste ground are nonselective and kill every plant with which they come into contact.
• Herbology
  Herbology is the traditional Chinese medical practice of combining plants, minerals, and parts of animals for medical treatment.
• Herbs
  An herb (pronounced "urb" in American English and "hurb" in British English) is a plant grown for culinary or medicinal value. The green, leafy part of the plant is typically used. General usage differs between culinary herbs and medicinal herbs. A medicinal herb may be a shrub or other woody plant, whereas a culinary herb is a non-woody plant. By contrast, spices are the seeds, berries, bark, root, or other parts of the plant, even leaves in some cases. ...
• Herbs for Weight Management
  
• hereditary - ha-RED-ih-tair-ee
  Transmitted from parent to child by information contained in the genes.
• Hereditary Angioedema
  Angioedema (BE: angiooedema), also known by its eponym Quincke's edema and the older term angioneurotic edema, is the rapid swelling (edema) of the skin, mucosa and submucosal tissues. If it proceeds rapidly, it can lead to airway obstruction and suffocation, and it should therefore be treated as a medical emergency.
• Hereditary Bleeding Disorders
  
• Hereditary coproporphyria
  Hereditary coproporphyria is a rare type of porphyria that can have acute (severe but usually not long-lasting) symptoms along with symptoms that affect the skin. The disorder results from low levels of the enzyme responsible for the sixth step in heme production. Heme is a vital molecule for all of the body's organs. It is a component of hemoglobin, the molecule that carries oxygen in the blood. Hereditary coproporphyria is a subtype of porphyria. The signs and symptoms of hereditary coproporphyria are similar to those of acute intermittent porphyria, but attacks of acute symptoms tend to be less severe. Acute attacks usually begin in adulthood and cause abdominal pain, vomiting, diarrhea, and constipation. During an attack, a person may also experience muscle weakness, seizures, and mental changes such as anxiety and hallucinations. These signs and symptoms are triggered by nongenetic factors such as certain drugs, alcohol, dieting or fasting, and certain hormones. In about 30 percent of people with hereditary coproporphyria, the skin is overly sensitive to sunlight. Exposed areas become fragile and develop blistering and scarring. Skin symptoms may be milder between acute attacks. A rare form of this disorder called harderoporphyria has severe signs and symptoms that begin in infancy or childhood. In addition to the health problems listed above, children with harderoporphyria experience yellowing of the skin and the whites of the eyes (jaundice) and a low number of red blood cells (anemia).
• Hereditary fructose intolerance
  Hereditary fructose intolerance (HFI) or fructose poisoning is a hereditary condition caused by a deficiency of liver enzymes that metabolise ...
• hereditary leiomyomatosis and renal cell cancer syndrome -
  HLRCC. A rare inherited disorder that increases the risk of developing benign (noncancerous) tumors of the skin and the uterus (leiomyomas) and malignant (cancerous) tumors of the uterus (leiomyosarcoma) and the kidney.
• hereditary mutation -
  A gene change in the body's reproductive cells (egg or sperm) that becomes incorporated into the DNA of every cell in the body of offspring; hereditary mutations are passed on from parents to offspring. Also called germline mutation.
• Hereditary Neuropathies
  
• Hereditary neuropathy with liability to pressure palsies
  Hereditary neuropathy with liability to pressure palsies is a disorder that affects peripheral nerves. These nerves connect the brain and spinal cord to muscles as well as sensory cells that detect touch, pain, and temperature. In people with this disorder, the peripheral nerves are unusually sensitive to pressure, which can cause recurrent episodes of numbness and loss of muscle strength (pressure palsies). Hereditary neuropathy with liability to pressure palsies causes episodes of numbness, tingling, and/or muscle weakness. An episode can last from several minutes to several months, but recovery is usually complete. Repeated incidents, however, can cause permanent weakness or loss of sensation. This disorder is also associated with painful limbs, especially the hands. In this disorder, a pressure palsy episode results from problems in a single nerve, but any peripheral nerve can be affected. Episodes often recur, but not always at the same site. The most common problem sites involve nerves in wrists, elbows, and knees. Fingers, shoulders, hands, feet, and the scalp can also be affected. Many people with this disorder experience carpal tunnel syndrome when a nerve in the wrist (median nerve) is involved. Carpal tunnel syndrome is characterized by numbness, tingling, and weakness in the hand and fingers. An episode in the hand may affect fine motor activities such as writing, opening jars, and fastening buttons. An episode in the leg can make walking, climbing stairs, or driving difficult or impossible. Symptoms usually begin during adolescence or early adulthood but may develop anytime from childhood to late adulthood. Symptoms vary in severity; many people never realize they have the disorder, while some experience prolonged disability. Hereditary neuropathy with liability to pressure palsies does not affect life expectancy.
• hereditary nonpolyposis colon cancer -
  HNPCC. An inherited disorder in which affected individuals have a higher-than-normal chance of developing colorectal cancer and certain other types of cancer, often before the age of 50. Also called Lynch syndrome.
• Hereditary nonpolyposis colorectal cancer
  Hereditary nonpolyposis colorectal cancer, often called HNPCC or Lynch syndrome, is a type of inherited cancer of the digestive tract, particularly the colon (large intestine) and rectum. People with hereditary nonpolyposis colorectal cancer also have an increased risk of cancers of the stomach, small intestine, liver and gallbladder ducts, upper urinary tract, brain, skin, and prostate. Women with this disorder have a greatly increased risk of endometrial and ovarian cancer. Even though the disorder is described using the term nonpolyposis, people with hereditary nonpolyposis colorectal cancer may have occasional noncancerous growths in the colon called polyps. These colon polyps occur at an earlier age of onset than do colon polyps in the general population. Although the polyps do not occur in greater numbers than in the general population, they are more prone to become cancerous.
• Hereditary Spastic Paraplegia
  Hereditary spastic paraplegia (HSP), also called familial spastic paraparesis (FSP), refers to a group of inherited disorders that are characterized by progressive weakness and stiffness of the legs. Though the primary feature of HSP is severe, progressive, lower extremity spasticity, in more complicated forms it can be accompanied by other neurological symptoms. ...
• Heredopathia Atactica Polyneuritiformis
  
• Heritable Disorders of Connective Tissue
  
• Hernia, Inguinal
  
• Hernias
  A hernia is the protrusion of an organ or tissue out of the body cavity in which it normally lies. By far the most common hernias develop in the abdomen, when a weakness in the abdominal wall evolves into a localized hole, or "defect", through which the protrusion occurs. These may present either with pain at the site, a visible or palpable lump, or in some cases by more vague symptoms resulting from pressure on an intraabdominal organ which has become "stuck" in the hernia. ...
• Herniated Disc
  Slipped disc (medical term: prolapsed intervertebral disc) is a condition in which, due to a tear in the outer fibrous ring, the central part of the intervertebral disc is protruding into the spinal canal. Most commonly this occurs in the lowermost part of the spine, especially between the fourth and fifth vertebral bodies and between the fifth vetrebral body and the sacrum. This protrusion usually occurs to one side of the spinal canal, at the point where a nerve root leaves the canal. ...
• Heroic medicine
  Heroic medicine is any medicine or method of treatment that is aggressive or daring in a dangerously ill patient.
• Heroin
  Heroin or diamorphine (INN) (colloquially referred to as junk, babania, horse, golden brown, smack, black tar, H, big H, lady H, dope, skag, juice, diesel, etc.) is an alkaloid opioid. Heroin is the 3,6-diacetyl derivative of morphine (hence diacetylmorphine) and is synthesised from it by acetylation. The white crystalline form is commonly the hydrochloride salt, diamorphine hydrochloride. It is highly addictive. ...
• Herpes Simplex
  The Herpes simplex virus infection (common names: herpes, cold sores) is a common, contagious, incurable, and in some cases sexually transmitted disease caused by a double-stranded DNA virus. The infection can also affect the brain, in which case the consequent disease is called herpes simplex encephalitis.
• Herpes Simplex Virus Infection
  
• herpesvirus - HER-peez-VYE-rus
  A member of the herpes family of viruses.
• Hespan
  
• Hetastarch
  
• heterogeneous -
  Made up of elements or ingredients that are not alike.
• heterogenic - het-er-o-JEN-ik
  Derived from a different source or species. Also called heterogenous.
• heterogenous -
  Derived from a different source or species. Also called heterogenic.
• Heterophyes Infection
  
• Heterozygous OSMED
  
• Heterozygous otospondylomegaepiphyseal dysplasia
  
• Hexadrol
  dexamethasone: a corticosteroid drug (trade names Decadron or Dexamethasone Intensol or Dexone or Hexadrol or Oradexon) used to treat allergies or inflammation
• Hexadrol Injection
  
• Hexadrol Liquid
  
• Hexatuss
  
• Hextend
  
• hexyl 5-aminolevulinate -
  A substance that is used to find and kill tumor cells. It enters tumor cells and becomes activated when exposed to a special type of light. A chemical reaction causes the cells to produce fluorescent light and die.
• Hiatal Hernia
  Hiatus hernia or hiatal hernia is the protrusion (or hernia) of the upper part of the stomach into the thorax through a tear or weakness in the diaphragm.
• Hibiclens
  Chlorhexidine Gluconate is an antiseptic used as an active ingredient in mouthwash designed to kill plaque and other oral bacteria. In some countries it is available by prescription only. It is sometimes marketed under the brand names Peridex, Periochip, Periogard Oral Rinse or in the UK Corsodyl or Chlorohex. Chlorhexidine Gluconate-based products are usually utilized to combat or prevent gum diseases such as gingivitis.
• HibTITER
  
• Hiccups
  A hiccup is an involuntary spasm of the diaphragm; typically this repeats several times a minute until some home remedy is applied. The sudden rush of air into the lungs causes the glottis to close, creating the "hic" noise. It is sometimes written as hiccough, though this spelling is becoming archaic.
• High altitude cerebral edema (brain swelling)
  High altitude cerebral edema (or HACE) is a severe (frequently fatal) form of altitude sickness. HACE is the result of swelling of brain tissue ...
• High blood cholesterol and triglycerides
  
• High Blood Pres.
  
• High blood pressure (hypertension)
  Arterial hypertension, or high blood pressure is a medical condition where the blood pressure is chronically elevated. Persistent hypertension is one of the risk factors for strokes, heart attacks and heart failure, and is a leading cause of chronic renal failure.
• High Blood Pressure and Kidney Disease
  
• High Cholesterol
  elevation in fat component in blood
• High Deductible Health Plan
  
• High Density Lipoprotein
  High density lipoproteins (HDL) form a class of lipoproteins, varying somewhat in their size and contents, that carry cholesterol from the body's tissues to the liver.
• High Fiber Diet
  
• high grade -
  When referring to cancerous and precancerous growths, a term used to describe cells that look abnormal under a microscope. These cells are more likely to grow and spread quickly than cells in low-grade cancerous and precancerous growths.
• High Protein Diets
  
• High Risk Pregnancy
  
• high-dose chemotherapy -
  An intensive drug treatment to kill cancer cells, but that also destroys the bone marrow and can cause other severe side effects. High-dose chemotherapy is usually followed by bone marrow or stem cell transplantation to rebuild the bone marrow.
• high-dose-rate remote brachytherapy -
  A type of internal radiation treatment in which the radioactive source is removed between treatments. Also called high-dose-rate remote radiation therapy or remote brachytherapy.
• high-dose-rate remote radiation therapy -
  A type of internal radiation treatment in which the radioactive source is removed between treatments. Also called high-dose-rate remote brachytherapy or remote brachytherapy.
• high-energy photon therapy -
  A type of radiation therapy that uses high-energy photons (units of light energy). High-energy photons penetrate deeply into tissues to reach tumors while giving less radiation to superficial tissues such as the skin.
• High-Fiber Plan
  
• High-Glycemic Index Foods
  
• high-grade lymphoma -
  A type of lymphoma that grows and spreads quickly, and has severe symptoms. It is seen frequently in patients who are HIV-positive (AIDS-related lymphoma). Also called aggressive or intermediate-grade lymphoma.
• high-grade squamous intraepithelial lesion -
  HSIL. A precancerous condition in which the cells of the uterine cervix are moderately or severely abnormal.
• high-risk cancer -
  Cancer that is likely to recur (come back), or spread.
• highly active antiretroviral therapy -
  HAART. Treatment for human immunodeficiency virus (HIV) infection that uses a combination of several antiretroviral drugs. The drugs inhibit the ability of the virus to multiply in the body, and they slow down the development of AIDS.
• Highwaythorn
  
• hilar -
  Refers to the area where nerves and blood vessels attach to an organ.
• Hip
  The term HIP may refer to: * Hot Isostatic Pressing, a manufacturing process* Host Identity Protocol, a computing term
• Hip berry
  
• Hip Injuries &
  
• Hip Injuries and Disorders
  
• Hip Replacement
  Hip replacement is the most successful, cheapest and safest form of replacement surgery. The first artificial hips were inserted in the 1930s, made of steel or chrome. They were better than arthritis but had a number of drawbacks. The main problem being that the articulating surfaces could not be lubricated by the body, leading to wear and loosening and hence the need to replace the joint again (known as revision operations). ...
• Hiprex
  
• Hips and Thigh Exercises
  
• Hirayama Syndrome
  
• Hirschsprung's Disease
  Hirschsprung's disease, or aganglionic megacolon. involves an enlargement of the colon, caused by bowel obstruction resulting from an aganglionic section of bowel (the normal enteric nerves are absent) that starts at the anus and progresses upwards. The length of bowel that is affected varies but seldom stretches for more than a foot or so.
• Hirsuitism
  Hirsutism is the excessive growth of hair, particularly on a woman's face, torso and limbs, and is generally caused by increased androgens. It is a common sign of polycystic ovary syndrome in women. It can also be caused by a pituitary tumour or other serious medical conditions.
• Hirsutism
  Hirsutism is the excessive growth of hair, particularly on a woman's face, torso and limbs, and is generally caused by increased androgens. It is a common sign of polycystic ovary syndrome in women. It can also be caused by a pituitary tumour or other serious medical conditions.
• Hismanal
  
• Hispanic & Latina Women
  
• Hispanic-American Health
  
• histamine dihydrochloride -
  A drug being studied for its ability to enhance the effectiveness of IL-2 in treating acute myeloid leukemia.
• Histex CT
  
• Histex HC
  
• Histex PD
  
• Histex SR capsules
  
• Histinex D Oral Liquid
  
• Histinex HC Syrup
  
• Histinex PV Syrup
  
• histiocytic lymphoma -
  An outdated term referring to non-Hodgkin's lymphomas made up of large abnormal lymphoid cells. Histiocytic lymphomas include mature B-cell and T-cell non-Hodgkin's lymphomas. Many tumors that were once called histiocytic lymphomas are now considered to be a type of large cell lymphoma.
• histologic examination -
  The examination of tissue specimens under a microscope.
• histology -
  The study of tissues and cells under a microscope.
• histone -
  A type of protein found in chromosomes. Histones bind to DNA, help give chromosomes their shape, and help control the activity of genes.
• histone deacetylase -
  HDAC. An enzyme that changes the way histone binds to DNA. HDAC inhibitors are being studied as a treatment for cancer.
• Histoplasmosis
  Histoplasmosis is a disease caused by the fungus Histoplasma capsulatum. Its symptoms vary greatly, but the disease primarily affects the lungs. Occasionally, other organs are affected—this form of the disease is called disseminated histoplasmosis, and it can be fatal if untreated.
• historic cohort study -
  A research study in which the medical records of groups of individuals who are alike in many ways but differ by a certain characteristic (for example, female nurses who smoke and those who do not smoke) are compared for a particular outcome (such as lung cancer). Also called a retrospective cohort study.
• historical control subject -
  An individual treated in the past and used in a comparison group when researchers analyze the results of a clinical study that had no control group. The use of a control, or comparison, group helps researchers determine the effects of a new treatment more accurately.
• History of CDC
  
• History of traditional Chinese medicine
  Much of the philosophy of traditional Chinese medicine derived from Taoist philosophy,and reflects the classical Chinese belief that individual human experiences express causative principles effective in the environment at all scales.These causative principles, whether material, essential, or spiritual, correlate as the expression of the fates decreed by heaven.
• Histrionic personality disorder
  In psychiatry, histrionic personality disorder (HPD) is a personality disorder which involves a pattern of excessive emotional expression and attention-seeking, including an excessive need for approval and inappropriate seductiveness, that usually begins in early adulthood.
• Histussin D
  
• Histussin D Syrup
  
• Histussin HC Syrup
  
• HIV -
  Human immunodeficiency virus, the cause of acquired immunodeficiency syndrome (AIDS).
• Hiv / Human Immunodeficiency Virus
  
• HIV antibody -
  A substance produced by certain white blood cells in reaction to contact with HIV, the human immunodeficiency virus.
• HIV positive -
  Infected with the human immunodeficiency virus (HIV), the cause of acquired immunodeficiency syndrome (AIDS).
• HIV Testing
  HIV test kits used both to screen donor blood, blood components and cellular products, and to diagnose, treat and monitor persons with HIV and AIDS are regulated in the United States by the FDA.
• HIV/AIDS Surveillance Reports
  
• Hives
  Urticaria or hives is a relatively common form of allergic reaction that causes raised red skin welts that range upwards from 5 mm (about a 1/4 inch) in diameter, itch severely, and often have a pale border. Urticaria is caused by direct contact with an allergenic substance (generally a plant, such as poison ivy), or an immune response to food or some other allergen. Hives can also be caused by stress. Urticaria is also known as nettle rash or uredo.
• Hives and angioedema
  
• HLA -
  Human lymphocyte antigen. One of a group of proteins found on the surface of white blood cells and other cells that play an important part in the body's immune response to foreign substances. These antigens vary from person to person, and an HLA test is done before organ transplantation to find out if tissues match between a donor and a recipient. Also called human leukocyte antigen.
• HLA-B27
  Human Leukocyte Antigen B*27 (subtypes B*2701-2724) is a class I surface antigen encoded by the B locus in the MHC on chromosome 6. It presents microbial antigens to T-cells and is strongly associated with certain immunity diseases (SpA spondyloarthropathies). In the general population, about 8% Caucasian, 4% African, 2-9% Chinese, and 0.1-0.5% Japanese have the HLA-B27 antigen. In Northern Scandinavia (Lapland), 24% of people are HLA-B27 positive while 1.8% have ankylosing spondylitis (AS).
• HMO
  House in multiple occupation – Bedsits / flatlets normally self-contained room with either cooking facilities in the room or a shared kitchen or shared bathroom and toilet facilities. Under the Housing Act 2004 it will cover any property occupied by more than one household that is a converted building even if the flats are nort self contained. ...
• HN-1, HN-2, HN-3
  
• HNPCC -
  Hereditary nonpolyposis colon cancer. An inherited disorder in which affected individuals have a higher-than-normal chance of developing colorectal cancer and certain other types of cancer, often before the age of 50. Also called Lynch syndrome.
• Hoarse voice
  
• Hoaxes &
  
• Hockey
  Derived from old French "hoquet" meaning bent stick, similar to "hook".
• Hodgkin's disease -
  A malignant disease of the lymphatic system that is characterized by painless enlargement of lymph nodes, the spleen, or other lymphatic tissue. Other symptoms may include fever, weight loss, fatigue, or night sweats. Also called Hodgkin's lymphoma.
• Hodgkin's lymphoma -
  A malignant disease of the lymphatic system that is characterized by painless enlargement of lymph nodes, the spleen, or other lymphatic tissue. Other symptoms may include fever, weight loss, fatigue, or night sweats. Also called Hodgkin's disease.
• Hodgkin's Lymphoma During Pregnancy
  
• Hodgkin's Lymphoma, Adult
  
• Hodgkin's Lymphoma, Childhood
  
• Hodgkin//'s disease
  
• Hodgkin//'s disease cancer
  
• Hodgkin//'s lymphoma
  
• Hodgkin///'s disease cancer
  
• Holistic Dentistry
  
• Holistic medicine
  Holistic health is a philosophy which promotes wholeness over the reductionism and dualism of conventional Western medicine. Its proponents argue against making an unnaturally acute distinction between soma and psyche, structure and function.
• Hollywood 48 Hour Miracle Diet
  
• Hollywood Diet
  
• holmium Ho 166 DOTMP -
  A drug containing a radioactive isotope that is used in the diagnosis and treatment of cancer.
• Holoprosencephaly
  Cephalic disorders are congenital conditions that stem from damage to, or abnormal development of, the budding nervous system. Cephalic is a term that means "head" or "head end of the body." Congenital means the disorder is present at, and usually before, birth.
• Holy See
  The term Holy See (Latin: Sancta Sedes, lit. "holy seat") refers in a geographic sense to the episcopal see of Rome, of which the Pope is the ordinary (i.e., the diocesan bishop); in canon law, the terms Holy See and Apostolic See refer to the Pope ("Roman Pontiff") and the Roman Curia together unless otherwise indicated by context (can. 361). ...
• Homatropine
  
• Homatropine Ophthalmic Drops
  
• Home &
  
• Home Care
  Home care can refer to health care provided in the home by health care professionals (often referred to as home health care or formal care) or by family and friends (informal care). Estimates for the US indicate that most home care is of the informal variety with families and friends providing substantial amounts of care, including very high tech kinds of care as well as simpler assistance with bathing or dressing. ...
• Home Care Services
  
• Home Equipment
  
• Home Exercise Machines
  
• Home Fitness Equipment
  
• Home Nebulizer
  
• Home remedies
  
• Home Tests
  
• Homeless Health Care
  
• Homeless Health Concerns
  
• Homelessness
  Homelessness is a situation in which a person does not have a permanent place of residence. This is distinguished from nomadic cultures in which that condition is considered normal. The problem of homelessness is most prevalent in the poor sections of large cities and suburbs.
• homeopathic medicine -
  An alternative approach to medicine based on the belief that natural substances, prepared in a special way and used most often in very small amounts, restore health. According to these beliefs, in order for a remedy to be effective, it must cause in a healthy person the same symptoms being treated in the patient. Also called homeopathy.
• Homeopathic Remedies
  made from plant, animal and mineral extracts. The basic extract is called a "mother tincture" which is then diluted to the desirable strength.
• Homeopathy
  Homeopathy is an alternative medical practice founded on resemblances. The underlying theory is that disease are cured by remedies which produce, on a healthy person, similar effects to the symptoms of the patient's complaint. "For example, someone suffering from insomnia may be given a homeopathic dose of coffee. Administered in diluted form, homeopathic remedies are derived from many natural sources, including plants, metals, and minerals. Numbering in the thousands, these remedies have been used to treat a wide variety of ailments including seasonal allergies, asthma, influenza, headaches, and indigestion."
• Homicide
  Homicide is the killing of another human being by one or more others. In contrast, suicide is the self killing of a human being.
• Homocysteine
  The metabolic intermediate homocysteine is an amino acid created by the single carbon chemistry of S-adenosyl-methionine. It can be converted back to methionine, or converted to cysteine or taurine via the transsulfuration pathway.
• Homocystinuria
  Homocystinuria is an inherited disorder in which the body is unable to process certain amino acids (the building blocks of proteins) properly. The most common form of the condition is caused by the lack of an enzyme called cystathionine beta-synthase. This form of homocystinuria is characterized by dislocation of the lens in the eye, an increased risk of abnormal blood clots, and skeletal abnormalities. Problems with development and learning are also evident in some cases. Less common forms of homocystinuria are caused by a lack of other enzymes involved in processing amino acids. These disorders can cause mental retardation, seizures, problems with movement, and a blood disorder called megaloblastic anemia.
• homoharringtonine -
  An anticancer drug that belongs to the plant alkaloid family of drugs.
• Homosexuality
  Homosexuality may refer to:* A sexual orientation characterized by aesthetic attraction, romantic love, and sexual desire exclusively or almost exclusively for members of the same sex or gender identity.* Sexual relations with another of the same sex or gender regardless of sexual orientation or self-identification.* A sexual identity or self-identification, which may or may not imply exclusively homosexual behavior or attraction.
• Honduras
  Honduras is a country in northern Central America, bordered to the west by Guatemala, to the south west El Salvador, to the south east by Nicaragua, to the south by the Pacific Ocean and to the north by the Gulf of Honduras and the Caribbean Sea. Belize (formerly "British Honduras") is 75 km away across the Bay of Honduras.
• Hong Kong SAR
  The Hong Kong Special Administrative Region of the People's Republic of China (Chinese: 中華人民共和國香港特別行政區, pronunciation ) is a Special Administrative Region of the People's Republic of China located at the south coast of China. Hong Kong usually participates in international events under the name "Hong Kong, China".
• Hong Qu
  
• Hoodia
  Hoodia is a genus in the plant family Apocynaceae, in the part of the family previously treated as a separate family Asclepiadaceae. They are stem succulents that can reach up to 1 m high and present exuberant flowers, often with flesh colour and strong smell. Hoodias are protected plants, typical of the Namib Desert, ranging from Central Namibia to southern Angola, especially in plains and rocky areas. Common names include "Bushmans Hat" and "Queen of the Namib".
• Hookworm Disease
  The hookworm is a parasite that lives in the small intestine of its host, which may be a mammal such as a dog, cat, or human. Two species of hookworms commonly infect humans, Ancylostoma duodenale and Necator americanus. The distribution of each species significantly overlaps that of the other. Necator americanus predominates in The Americas and Australia, while only A. duodenale is found in the Middle East, North Africa and southern Europe. ...
• Hookworm Infection
  
• Hops
  The hop (Humulus) is a small genus of flowering plants, native to the temperate Northern Hemisphere. The female flowers, commonly called hops, are used as flavouring and stabilisers during beer brewing.
• Hordeolum
  A stye (also spelled sty) is an inflammation of the sebaceous glands at the base of the eyelashes. It is generally caused by a Staphylococcus bacteria infection. Styes are not believed to be infectious. They are particularly common in infants.
• Hormonal Disorder
  
• hormonal therapy -
  Treatment that adds, blocks or removes hormones. For certain conditions (such as diabetes or menopause), hormones are given to adjust low hormone levels. To slow or stop the growth of certain cancers (such as prostate and breast cancer), synthetic hormones or other drugs may be given to block the body's natural hormones. Sometimes surgery is needed to remove the gland that makes hormones. Also called hormone therapy, hormone treatment, or endocrine therapy.
• hormone -
  A chemical made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be made in a laboratory.
• hormone receptor -
  A protein on the surface of a cell that binds to a specific hormone. The hormone causes many changes to take place in the cell.
• hormone receptor test -
  A test to measure the amount of certain proteins, called hormone receptors, in cancer tissue. Hormones can attach to these proteins. A high level of hormone receptors may mean that hormones help the cancer grow.
• hormone replacement therapy -
  HRT. Hormones (estrogen, progesterone, or both) given to women after menopause to replace the hormones no longer produced by the ovaries. Also called menopausal hormone therapy.
• hormone responsive -
  In oncology, describes cancer that responds to hormone treatment.
• Hormone Suppressants
  
• hormone therapy -
  Treatment that adds, blocks or removes hormones. For certain conditions (such as diabetes or menopause), hormones are given to adjust low hormone levels. To slow or stop the growth of certain cancers (such as prostate and breast cancer), synthetic hormones or other drugs may be given to block the body's natural hormones. Sometimes surgery is needed to remove the gland that makes hormones. Also called hormonal therapy, hormone treatment, or endocrine therapy.
• hormone treatment -
  Treatment that adds, blocks or removes hormones. For certain conditions (such as diabetes or menopause), hormones are given to adjust low hormone levels. To slow or stop the growth of certain cancers (such as prostate and breast cancer), synthetic hormones or other drugs may be given to block the body's natural hormones. Sometimes surgery is needed to remove the gland that makes hormones. Also called hormonal therapy, hormone therapy, or endocrine therapy.
• Hormones
  A hormone (from Greek horman - "to set in motion") is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms (including plants) produce hormones. The best known hormones are those produced by endocrine glands of vertebrate animals, but hormones are produced by nearly every organ system and tissue type in a human or animal body. Hormone molecules are secreted (released) directly into the bloodstream, other body fluids, or into adjacent tissues. ...
• Horner's syndrome -
  A condition in which one side of the face is flushed, does not produce sweat, and has a constricted pupil and drooping eyelid. It can be caused by an injury to, or paralysis of, nerves in the neck, or by a tumor.
• Horse Chestnut
  The genus Aesculus comprises about 20-25 species of deciduous trees and shrubs native to the temperate northern hemisphere, with 7-10 species native to North America and 13-15 species native in Eurasia; there are also several natural hybrids. ...
• Horse Chestnut Skin Cream
  
• Horseradish
  Horseradish (Armoracia rusticana, syn. Cochlearia armoracia) is a perennial plant of the Brassicaceae family, which includes mustard and cabbages. The plant is probably native to southeastern Europe and western Asia, but is popular around the world today. It grows up to 1.5 metres (five feet) tall and is mainly cultivated for its large white, tapering root, although the leaves are also edible.
• Horses, Infections from
  
• Horsetail
  The horsetails comprise 15 species of plants in the genus Equisetum. This genus is the only one in the family Equisetaceae, which in turn is the only family in the order Equisetales and the class Equisetopsida. This class is now usually placed as the sole member of the Division Equisetophyta, though some authorities place it instead in the Division Tracheophyta or Archeophyta. The plants in the genus Equisetum are considered fern allies. ...
• hospice - HOS-pis
  A program that provides special care for people who are near the end of life and for their families, either at home, in freestanding facilities, or within hospitals.
• Hospice Care
  Palliative care is any form of medical care or treatment that concentrates on reducing the severity of the symptoms of a disease or slows its progress rather than providing a cure. It aims at improving quality of life, and particularly at reducing or eliminating pain.
• Hospice Care Survey
  
• Hospital
  A hospital today is an institution for professional health care provided in part by physicians and nurses.
• Hospital Data / Inpatient Care
  
• Hospital-acquired pneumonia
  Hospital-acquired pneumonia (HAP) or Nosocomial pneumonia refers to any pneumonia contracted within 48-72 hours of being admitted in hospital. ...
• Hospital/Healthcare Setting Infections
  
• Hospitals
  A hospital today is an institution for professional health care provided in part by physicians and nurses.
• host cell -
  A cell that is infected by a virus or another type of microorganism.
• hot flash -
  A sudden, temporary onset of body warmth, flushing, and sweating (often associated with menopause).
• hot nodule -
  When radioactive material is used to examine the thyroid with a scanner, nodules that collect more radioactive material than the surrounding thyroid tissue are considered "hot." Hot nodules are rarely malignant. Hot nodules are sometimes called hyperfunctioning nodules.
• Hot tub folliculitis
  Hot Tub Folliculitis (also known as "Pseudomonas aeruginosa folliculitis") is a common type of folliculitis, a condition which causes inflammation ...
• Hot Tub Rash
  
• Hotlines
  
• hotspot -
  In genetics, an area of DNA that is likely to mutate (change).
• Household Poisons
  
• Housing
  A house in its most general sense is a human-built dwelling with enclosing walls, a floor, and a roof. It provides shelter against precipitation, wind, heat, cold and intruding humans and animals. When occupied as a routine dwelling for humans, a house is called a home (though animals may often live in the house as well, both domestic pets and "unauthorised" animals such as mice living in the walls). ...
• HPPH -
  2-(1-hexyloxyethyl)-2-devinyl pyropheophorbide-a. A drug that is used in photodynamic therapy that is absorbed by tumor cells; when exposed to light, it becomes active and kills the cancer cells.
• HPS
  HPS may stand for: * Croatian Mountaineering Association* Hantavirus pulmonary syndrome* Heart protection study* High Pressure Sodium*History and philosophy of science
• HPV -
  Human papillomavirus. A virus that causes abnormal tissue growth (warts). Some types of HPV are associated with cervical and other types of cancer.
• HRT -
  Hormone replacement therapy. Hormones (estrogen, progesterone, or both) given to women after menopause to replace the hormones no longer produced by the ovaries. Also called menopausal hormone therapy.
• hs-CRP
  
• HTLV-1 -
  Human T-cell leukemia virus type 1. A retrovirus that infects T-cells (a type of white blood cell) and can cause leukemia and lymphoma. HTLV-1 is spread by sharing syringes or needles used to inject drugs, through sexual contact, and from mother to child at birth or through breast-feeding.
• HTLV-1 Associated Myelopathy
  
• http://www.hon.ch/HONselect/
  
• hu14.18-interleukin-2 fusion protein -
  An anticancer drug in which hu14.18, a monoclonal antibody, is combined with interleukin-2. The monoclonal antibody binds to the cancer cells and delivers IL-2, which stimulates the immune system to destroy the cancer cells.
• Huang Chi
  
• Huang Ken
  
• Huang Lian -
  A Chinese herb that has been used as a treatment for a variety of medical problems. It is being studied as an anticancer drug.
• Huang Qin
  
• HuGENet
  
• Humalog
  Insulina de acción inmediata o directa. Es un análogo de la insulina que comienza a actuar mucho más rápido que la cristalina. Debe su mecanismo de acción “inmediata” a que cada molécula de insulina se encuentra independiente, o sea, no ligada al zinc (la insulina normalmente forma dímeros y luego hexámeros por la unión de tres dímeros a una molécula de zinc). Véase: Análogos de la insulina.
• Humalog Mix 75/25
  
• Human Cell Cultures in Vaccines
  
• Human Chorionic Gonadotropin (HCG)
  Human chorionic gonadotropin (hCG) is a peptide hormone produced in pregnancy, that is made by the embryo soon after conception and later by the trophoblast (part of the placenta). Its role is to prevent the disintegration of the corpus luteum of the ovary and thereby maintain progesterone production that is critical for a pregnancy in humans. hCG may have additional functions, for instance it is thought that it affects the immune tolerance of the pregnancy. ...
• human epidermal growth factor receptor 2 -
  HER2/neu. The HER2/neu protein is involved in growth of some cancer cells. Also called c-erbB-2.
• Human Genome Epidemiology Network
  
• Human Genome Project
  The Human Genome Project (HGP) endeavored to map the human genome down to the nucleotide (or base pair) level and to identify all the genes present in it.
• Human Growth Hormone
  The hormone that regulates growth.
• Human Growth Hormone and Creutzfeldt-Jakob Disease
  
• human immunodeficiency virus -
  HIV. The cause of acquired immunodeficiency syndrome (AIDS).
• human leukocyte antigen -
  HLA. One of a group of proteins found on the surface of white blood cells and other cells that play an important part in the body's immune response to foreign substances. These antigens vary from person to person, and an HLA test is done before organ transplantation to find out if tissues match between a donor and a recipient. Also called human lymphocyte antigen.
• human lymphocyte antigen -
  HLA. One of a group of proteins found on the surface of white blood cells and other cells that play an important part in the body's immune response to foreign substances. These antigens vary from person to person, and an HLA test is done before organ transplantation to find out if tissues match between a donor and a recipient. Also called human leukocyte antigen.
• Human Milk Banks
  
• Human Papilloma Virus (hpv)
  Human papillomavirus (HPV) is a virus which affects humans. Some of its effects are classed as sexually transmitted disease (STD).
• human papillomavirus - pap-ih-LO-ma-VYE-rus
  HPV. A virus that causes abnormal tissue growth (warts). Some types of HPV are associated with cervical and other types of cancer.
• Human Papillomavirus (HPV) Infection
  
• Human Parainfluenza Viruses
  Human parainfluenza viruses (HPIVs) are a group of four distinct serotypes of singled strand, RNA viruses. The are the second most common cause of lower respiratory tract infection in smaller children. Repeated infection throughout the life of the host is not uncommon. Symptoms of later breakouts include upper respiratory tract illness as in a cold and sore throat. The incubation period of all four serotypes is 1 to 7 days. ...
• human T-cell leukemia virus type 1 -
  A retrovirus that infects T-cells (a type of white blood cell) and can cause leukemia and lymphoma. HTLV-1 is spread by sharing syringes or needles used to inject drugs, through sexual contact, and from mother to child at birth or through breast-feeding.
• Humibid DM
  
• Humibid DM Sprinkle Capsules
  
• Humibid DM Tablets
  
• Humibid LA
  
• humidifier - hyoo-MID-ih-fye-er
  A machine that puts moisture in the air.
• Humira
  Humira is a fully human monoclonal antibody that inhibits TNFα. Together with infliximab and etanercept, it forms the drug class of the "biologicals" for the treatment of moderate to severe rheumatoid arthritis. Humira's manufacturer is Abbott Laboratories.
• Humor Therapy
  Therapeutic humor is defined as any intervention that promotes health and wellness by stimulating a playful discovery, expression or appreciation of the incongruity of life's situations. This intervention may enhance health as a complementary treatment of illness to facilitate healing or coping, whether physical, emotional, cognitive, social, or spiritual. ...
• Humulin 50/50
  
• Humulin 70/30
  
• Humulus lupulus
  The hop (Humulus) is a small genus of flowering plants, native to the temperate Northern Hemisphere. The female flowers, commonly called hops, are used as flavouring and stabilisers during beer brewing.
• Hung-chu
  
• Hungary
  The Republic of Hungary (Magyar Köztársaság ) or Hungary (Magyarország ) is a landlocked country in Central Europe, bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia and Slovenia. It is known locally as the Country of the Magyars.
• Hunger
  Hunger is applied literally to the need or craving for food; it can also be applied metaphorically to cravings of other sorts. It is an extreme of a normal appetite.
• Hunting
  Hunting is, in its most general sense, the pursuit of a target.
• Huntington disease
  Huntington disease is an inherited brain disorder that causes uncontrolled movements, mental and emotional problems, and progressive loss of thinking ability (cognition). Adult-onset Huntington disease, the most common form of this disorder, usually begins in middle age. There is also an early-onset form that begins in childhood or adolescence. Signs and symptoms of adult-onset Huntington disease can include irritability, depression, small involuntary movements, and trouble learning new information or making decisions. As the disease progresses, involuntary jerking movements (chorea) become more pronounced. The person may have trouble walking, speaking, and swallowing. Thinking and reasoning abilities are also affected. The duration of adult-onset Huntington disease generally ranges from 15 to 25 years. The clinical features of early-onset Huntington disease often differ from those of the adult-onset form. Signs and symptoms can include slowness, clumsiness, rigidity, loss of developmental milestones (such as motor skills), thick speech, and drooling. Seizures occur in about 25 percent of individuals with the condition. The course of early-onset Huntington disease may be shorter than adult-onset Huntington disease (10 to 15 years). Rarely, other genetic or acquired disorders can mimic some or all of the signs and symptoms of Huntington disease.
• Hup A
  
• Huperzia serrata
  
• Huperzine A
  Clinical studies have shown that alkaloids in Huperzine A help prevent the breakdown of acetylcholine, a primary neurotransmitter for memory and concentration. It has also been shown to enhance alertness and focus thought processes.
• Hurricaine Oral Gel
  
• Hurricaine Oral Spray
  
• Hurricaine Spray
  
• Hurricanes
  In meteorology, a tropical cyclone (or tropical storm, typhoon, or hurricane, depending on strength and location) is a type of low-pressure system which generally forms in the tropics. While they can be highly destructive, tropical cyclones are an important part of the atmospheric circulation system, which moves heat from the equatorial region toward the higher latitudes.
• Hutchinson-Gilford progeria syndrome
  Hutchinson-Gilford progeria syndrome is a genetic condition characterized by the dramatic, rapid appearance of aging beginning in childhood. Affected children typically look normal at birth and in early infancy, but then grow more slowly than other children and develop a characteristic facial appearance, hair loss, aged-looking skin, and severe hardening of the arteries (atherosclerosis).
• Hwanggum
  
• hyaluronidase injection, USP
  
• Hyaluronidase Ovine Injection
  
• Hycamtin
  A drug used to treat some types of cancer. It belongs to the family of drugs called topoisomerase inhibitors. Also called topotecan.
• HycoClear Tuss Syrup
  
• Hycotuss Expectorant Syrup
  
• Hydergine
  
• Hydergine Sublingual Tablets
  
• Hydralazine
  an antihypertensive drug (trade name Apresoline) that dilates blood vessels; used (often with a diuretic) to treat hypertension and congestive heart failure
• Hydralazine Injection
  
• Hydrate Injection
  
• hydration -
  Combining with water.
• hydrazine sulfate -
  A substance that has been studied as a treatment for cancer and as a treatment for cachexia (body wasting) associated with advanced cancer.
• Hydro PC II Liquid
  
• Hydro PC Liquid
  
• Hydro-Tussin HC Syrup
  
• Hydro-Tussin HD
  
• Hydro-Tussin XP
  
• Hydrocele
  A hydrocele denotes a pathological accumulation of serous fluid in a bodily cavity. A hydrocele testis is the accumulation of fluids around a testicle, and is fairly common, but should be treated surgically.
• hydrocephalus - hye-dro-SEF-uh-lus
  The abnormal buildup of cerebrospinal fluid in the ventricles of the brain.
• Hydrocephalus - Normal Pressure
  
• Hydrochlorothiazide
  Hydrochlorothiazide (HCZ or HCT) is a popular diuretic drug that acts by inhibiting the kidney's ability to retain water.
• Hydrocil Instant
  
• Hydrocodone and Ibuprofen
  
• Hydrocodone and Phenylephrine
  
• Hydrocodone and Potassium Guaiacolsulfonate
  
• Hydrocodone and Pseudoephedrine Liquid
  
• Hydrocodone GF Syrup
  
• Hydrocodone with Chlorpheniramine
  
• Hydrocodone, Potassium Guaiacolsulfonate and Pseudoephedrine
  
• hydrocortisone -
  A drug used to relieve the symptoms of certain hormone shortages and to suppress an immune response.
• Hydrocortisone and Pramoxine Rectal Aerosol Foam
  
• Hydrocortisone and Pramoxine Topical
  
• Hydrocortisone and Pramoxine Topical Aerosol Foam
  
• Hydrocortisone Dental Paste
  
• Hydrocortisone Injection
  
• Hydrocortisone Oral
  
• Hydrocortisone Rectal Foam or Enema
  
• Hydrocortisone Suppositories
  
• Hydrocortisone Tablets
  
• Hydrocortisone Topical
  
• Hydrocortisone, Chloroxylenol and Pramoxine Eardrops
  
• Hydrocortisone, Neomycin, and Polymyxin Ophthalmic Drops
  
• Hydrocortisone, Neomycin, and Polymyxin Topical
  
• Hydrocortone Acetate
  
• Hydrocortone Phosphate
  
• Hydrocotyle asiatica
  
• Hydrofluoric Acid
  Hydrofluoric acid is a highly corrosive solution of the chemical compound hydrogen fluoride in water. Pure hydrogen fluoride is often called anhydrous hydrofluoric acid. Hydrofluoric acid is a weak acid. This is because it does not dissociate completely in water due to the relatively high strength of hydrogen-fluorine bonds. ...
• Hydrogen Breath Test
  test for lactose intolerance that measures breath samples for too much hydrogen.
• Hydrogen cyanide
  Hydrogen cyanide is a chemical compound with chemical formula H-C≡N. A solution of hydrogen cyanide in water is called hydrocyanic acid or prussic acid. Pure hydrogen cyanide is a colorless, very poisonous, and highly volatile liquid that boils slightly above room temperature at 26 °C, thereby generating hydrogen cyanide gas. Hydrogen cyanide has a faint, bitter, almond-like odor that some people are unable to smell due to a genetic trait. ...
• Hydrogen fluoride
  Hydrofluoric acid is a highly corrosive solution of the chemical compound hydrogen fluoride in water. Pure hydrogen fluoride is often called anhydrous hydrofluoric acid. Hydrofluoric acid is a weak acid. This is because it does not dissociate completely in water due to the relatively high strength of hydrogen-fluorine bonds. ...
• hydrogen peroxide -
  A chemical used in bleaches, dyes, cleansers, antiseptics, and disinfectants. In a concentrated form, it is toxic and irritating to tissues.
• hydrolysis -
  A chemical reaction that uses water to break down a compound.
• hydromorphone -
  A drug used to relieve pain.
• Hydromorphone Hydrochloride Injection
  
• Hydromorphone Liquid
  
• Hydromorphone Rectal
  
• Hydromorphone Tablets
  
• Hydron CP
  
• Hydron KGS
  
• Hydron PSC Liquid
  
• hydronephrosis -
  Abnormal enlargement of a kidney, which may be caused by blockage of the ureter (such as by a kidney stone) or chronic kidney disease that prevents urine from draining into the bladder.
• Hydrops Fetalis
  Hydrops fetalis is blood condition in the fetus characterized by an edema in the fetal subcutaneous tissue. It is presented in two forms: immmune or non-immune. Cases of immune hydrops fetalis are relatively rare today, due to treatments developed in the 1970s. The non-immune form of hydrops fetalis can be caused by any number of disorders. One notable cause is a deficiency of the enzyme beta-glucuronidase. ...
• Hydroquinone Topical
  
• Hydrotherapy
  Hydrotherapy is the external use of water in the medical treatment of disease.
• hydroureter -
  Abnormal enlargement of the ureter caused by any blockage that prevents urine from draining into the bladder.
• hydroxychloroquine -
  A substance that decreases immune responses in the body. It is used to treat some autoimmune diseases, and is being studied as a treatment for graft-versus-host disease. Hydroxychloroquine belongs to the family of drugs called antiprotozoals.
• Hydroxycut
  
• Hydroxytryptophan
  
• hydroxyurea -
  An anticancer drug that belongs to the family of drugs called antimetabolites.
• Hydroxyzine
  Hydroxyzine is a piperazine derivative that is used as an antihistamine (especially for pruritus), anti-emetic, and anxiolytic drug. It can also be used as an adjunct to pre- and post-operative medication and it also possesses a weak analgesic effect. Hydroxyzine is sold under brand names such as Atarax, Serecid and Vistaril.
• Hydroxyzine Injection
  
• Hydroxyzine Oral Syrup
  
• Hymenolepiasis
  Hymenolepiasis is infestation by one of two species of tapeworm:* Hymenolepis nana* Hymenolepis diminutaAlternative names are:* Dwarf tapeworm infection* Rat tapeworm
• Hyocosin
  
• Hyoscyamine
  Hyoscyamine is a chemical compound, a tropane alkaloid it is the levo-isomer to atropine. It is a secondary metabolite of some plants.
• Hyoscyamine Injection
  
• Hyoscyamine Liquid
  
• Hyoscyamine Sublingual Tablets
  
• Hyosophen Elixer
  
• hyperbaric oxygen -
  Oxygen that is at an atmospheric pressure higher than the pressure at sea level. Breathing hyperbaric oxygen to enhance the effectiveness of radiation therapy is being studied.
• hypercalcemia - hye-per-kal-SEE-mee-a
  Abnormally high blood calcium.
• Hypercoagulable Disorders
  
• hyperfractionation -
  A way of giving radiation therapy in smaller-than-usual doses two or three times a day instead of once a day.
• hyperglycemia -
  Abnormally high blood sugar.
• Hyperhidrosis
  Primary hyperhidrosis is the medical condition characterized by abnormally increased perspiration, in excess of that required for regulation of body temperature. Some patients afflicted with the condition experience a distinct reduction in the quality of life. Sufferers feel at a loss of control because perspiration takes place independent of temperature and emotional state.
• hypericum perforatum -
  St. John's wort. An herbal product sold as an over-the-counter treatment for depression. It is being studied for its ability to lessen certain side effects of cancer treatment.
• Hyperkalemia
  Hyperkalemia (hyper is high, kalium is the Latin name for potassium) is an elevated blood level (above 5.0 mmol/L) of the electrolyte potassium. Extreme degrees of hyperkalemia are considered a medical emergency due to the risk of arrhythmia.
• Hypermenorrhea
  menorrhagia: abnormally heavy or prolonged menstruation; can be a symptom of uterine tumors and can lead to anemia if prolonged
• hypernephroma - HYE-per-neh-FRO-ma
  The most common type of kidney cancer. It begins in the lining of the renal tubules in the kidney. The renal tubules filter the blood and produce urine. Also called renal cell cancer.
• Hyperparathyroidism
  In medicine (endocrinology), hyperparathyroidism is overactivity of the parathyroid glands and excess production of parathyroid hormone (PTH). Consequences are weakness of bone tissue (predisposing for fracture) and hypercalcemia (high calcium levels).
• Hyperphenylalaninemia
  Hyperphenylalaninemia is a disorder characterized by increased amounts of the amino acid phenylalanine in the bloodstream. (Amino acids are the building blocks of proteins.) Excess phenylalanine is toxic to nerve cells and, if left untreated, can result in brain damage. Genetic changes are related to the following types of hyperphenylalaninemia. phenylketonuria tetrahydrobiopterin deficiency High levels of phenylalanine interfere with the function of nerve cells and can prevent normal brain development. Resulting signs and symptoms range from mild to severe and can include mental retardation, seizures, and behavioral problems. For more specific information, refer to the summaries for phenylketonuria (PKU) and tetrahydrobiopterin (BH4) deficiency.
• Hyperpigmentation
  Hyperpigmentation refers to increased pigment, usually of the skin.
• hyperplasia - hye-per-PLAY-zha
  An abnormal increase in the number of cells in an organ or tissue.
• hypersensitivity -
  An exaggerated response by the immune system to a drug or other substance.
• Hypersexuality
  Hypersexuality describes human sexual behavior at levels high enough to be considered clinically significant.
• Hypersomnia
  Hypersomnia is an excessive amount of sleepiness, resulting in an inability to stay awake. A person is considered having hypersomnia if he or she sleeps more than 10 hours per day on a regular basis for at least two weeks.
• Hyperstat IV
  
• hypertension -
  Abnormally high blood pressure.
• Hypertensive retinopathy
  Hypertensive retinopathy is damage to the retina due to high blood pressure (i.e. hypertension).
• Hyperthermia
  Hyperthermia, also known as heat stroke or sunstroke is an acute condition resulting from excessive exposure to heat. The homeothermal regulatory mechanisms become overwhelmed and unable to effectively deal with the heat, and body temperature climbs uncontrollably. This is a serious medical emergency that requires immediate hospitalization. Body temperatures above 40°C (104°F) are considered life-threatening. ...
• hyperthermia therapy - hye-per-THER-mee-a
  A type of treatment in which body tissue is exposed to high temperatures to damage and kill cancer cells or to make cancer cells more sensitive to the effects of radiation and certain anticancer drugs.
• hyperthermic perfusion -
  A procedure in which a warmed solution containing anticancer drugs is used to bathe, or is passed through the blood vessels of, the tissue or organ containing the tumor.
• Hyperthyroid
  
• hyperthyroidism -
  Too much thyroid hormone. Symptoms include weight loss, chest pain, cramps, diarrhea, and nervousness. Also called overactive thyroid.
• Hypertonia
  Increased postural tone; ‘stiffness’ of muscles.
• hyperuricemia -
  A buildup of uric acid (a byproduct of metabolism) in the blood; a side effect of some anticancer drugs.
• hypervascular -
  Having a large number of blood vessels.
• Hyphed Liquid
  
• hypnosis -
  A trance-like state in which a person becomes more aware and focused and is more open to suggestion.
• Hypnotherapy
  Hypnotherapy is the treatment of a symptom, disease, or addiction by means of hypnotism. Hypnosis is "an altered state of consciousness, it is characterized by increased responsiveness to suggestion. The hypnotic state is attained by first relaxing the body then shifting the client's attention toward a narrow range of objects or ideas as suggested by the hypnotist or hypnotheraptist. The procedure is used to access various levels of the mind to effect positive changes in a person's behavior and to treat numerous health conditions. For example, hypnosis has been used to lose weight, improve sleep, and reduce pain and stress."
• Hypochondriasis
  Hypochondria (sometimes hypochondriasis) is the unfounded belief that one is suffering from a serious illness. Hypochondria is often associated with obsessive-compulsive disorder and anxiety. Hypochondria can also be brought on by stress.
• Hypochondrogenesis
  Hypochondrogenesis is a severe, inherited disorder of bone growth. This condition is characterized by a short body and limbs and abnormal bone formation in the spine and pelvis. Hypochondrogenesis is a subtype of collagenopathy, types II and XI. This condition is similar to another skeletal disorder, achondrogenesis, type 2; however, the spinal changes seen in hypochondrogenesis tend to be somewhat milder. Affected infants have short arms and legs, a small chest with short ribs, and underdeveloped lungs. The spinal bones (vertebrae) in the neck and part of the pelvis (the sacrum) do not harden, or ossify, properly. The face appears flat and oval-shaped, with widely spaced eyes, a small chin, and, in some cases, an opening in the roof of the mouth called a cleft palate. The abdomen is enlarged, and excess fluid may build up in the body before birth (a condition called hydrops fetalis). As a result of these serious health problems, infants are usually premature and stillborn or die shortly after birth from respiratory failure. Some infants have lived for a time, however, with intensive medical support. Babies who live past the newborn period are usually reclassified as having spondyloepiphyseal dysplasia congenita, a related disorder on the spectrum of abnormal bone growth.
• Hypochondroplasia
  Hypochondroplasia is a form of short-limbed dwarfism. This condition affects the conversion of cartilage into bone (a process called ossification), particularly in the long bones of the arms and legs. Hypochondroplasia is similar to achondroplasia, but the features tend to be milder. All people with hypochondroplasia are short. The adult height for men with this condition ranges from 138 to 165 cm (4 feet, 6 inches to 5 feet, 5 inches). The height range for adult women is 128 to 151 cm (4 feet, 2 inches to 4 feet, 11 inches). People with hypochondroplasia have disproportionately short arms and legs and broad, short hands and feet. Other clinical features may include an enlarged head (macrocephaly), limited range of motion at the elbows, and a sway of the lower back (lordosis). These signs are generally less pronounced than those seen with achondroplasia and may not be noticeable until early or mid-childhood. Mild to moderate mental retardation and learning disabilities have been reported in a small percentage of people with hypochondroplasia.
• Hypocortisolism
  
• Hypogammaglobulinemia (reduced levels of antibodies) -- increases the risk of infection
  
• hypoglycemia -
  Abnormally low blood sugar.
• Hypoglycemia/Low-Sugar Plan
  
• Hypogonadism
  Hypogonadism is a medical term for a defect of the reproductive system which results in lack of function of the gonads (ovaries or testes). The gonads have two functions: to produce hormones (testosterone, estradiol, antimullerian hormone, progesterone, inhibin B), activin and to produce gametes (eggs or sperm). Deficiency of sex hormones can result in defective primary or secondary sexual development, or withdrawal effects (e.g., premature menopause) in adults. ...
• Hypohydration
  Dehydration is the removal of water (hydor in ancient Greek) from an object. Medically, dehydration is a serious and potentially life-threatening condition in which the body contains an insufficient volume of water for normal functioning.
• Hypokalemia
  Hypokalemia is a potentially fatal condition in which the body fails to retain sufficient potassium to maintain health. The condition is also known as potassium deficiency. The prefix hypo- means low (contrast with hyper-, meaning high). The middle kal refers to kalium, which is Latin for potassium. The end portion of the word, -emia, means 'in the blood' (note, however, that hypokalemia is usually indicative of a systemic potassium deficit).
• Hypoparathyroidism
  In medicine (endocrinology), hypoparathyroidism is decreased function of the parathyroid glands, leading to decreased levels of parathyroid hormone (PTH). The consequence, hypocalcemia, is a serious medical condition.
• hypopharynx -
  The bottom part of the throat. Cancer of the hypopharynx is also called hypopharyngeal cancer.
• Hypopigmentation
  Hypopigmentation is the loss of skin color. It is due to melanocyte depletion.
• Hypopituitarism
  Hypopituitarism is a medical term describing deficiency (hypo) of one or more hormones of the pituitary gland. The pituitary produces a number of important regulating hormones, and its function is mainly regulated by the hypothalamus. In endocrinology, deficiency of multiple hormones of the anterior lobe is generally referred to as hypopituitarism, while deficiency of the posterior lobe generally only leads to diabetes insipidus. ...
• Hypoplastic Left Heart Syndrome
  In hypoplastic left heart syndrome, the left side of the heart - including the aorta, aortic valve, left ventricle and mitral valve - is underdeveloped. Blood returning from the lungs must flow through an opening in the wall between the atria (atrial septal defect). The right ventricle pumps the blood into the pulmonary artery and blood reaches the aorta through a patent ductus arteriosus.
• hypotension -
  Abnormally low blood pressure.
• Hypothalamic and Visual Pathway Glioma, Childhood
  
• hypothalamus - hye-po-THAL-uh-mus
  The area of the brain that controls body temperature, hunger, and thirst.
• Hypothermia
  Hypothermia is a medical condition in which the victim's core body temperature has dropped to significantly below normal and normal metabolism begins to be impaired. This begins to occur when the core temperature drops below 35 degrees Celsius (95 degrees Fahrenheit). If body temperature falls below 32 °C (90 °F), the condition can become critical and eventually fatal. ...
• hypothesis -
  A tentative proposal made to explain certain observations or facts that requires further investigation to be verified.
• hypothyroidism -
  Too little thyroid hormone. Symptoms include weight gain, constipation, dry skin, and sensitivity to the cold. Also called underactive thyroid.
• Hypotonia
  Hypotonia is a serious medical condition that entails abnormally decreased muscle tone, and is almost always found as early as infancy. Diagnosing hypotonia is usually relatively easy; what tends to be difficult for doctors is finding out what is causing the hypotonia. Despite the setbacks that hypotonia guarantees to a person's life, treatment and therapy can help hypotonic patients to adjust to their disability.
• hypoxia -
  A condition in which there is a decrease in the oxygen supply to a tissue. In cancer treatment, the level of hypoxia in a tumor may help predict the response of the tumor to the treatment.
• hypoxic -
  Having too little oxygen.
• hysterectomy - hiss-ter-EK-toe-mee
  An operation in which the uterus is removed.
• Hysteroscopy
  Hysteroscopy is the inspection of the uterine cavity by endoscopy. It allows for the diagnosis of intrauterine pathology and serves as a method for surgical intervention (operative hysteroscopy).
• Hytone
  
• Hyzaar