A headache (medically known as cephalalgia) is a condition of pain in the head; sometimes neck or upper back pain may also be interpreted as a headache. It ranks amongst the most common local pain complaints. Headaches have a wide variety of causes, ranging from eye strain, sinusitis and tension to life-threatening conditions such as encephalitis, meningitis, cerebral aneurysms and brain tumors. When the headache occurs in conjunction with a head injury the cause is usually quite evident; h ...
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Signs and symptoms
... A typical migraine headache attack produces some or all of these signs and symptoms: Moderate to severe pain — many migraine headache sufferers feel pain on only one side of their head, while so...
Source: MayoClinic

... Although much about headaches still isn''t understood, some researchers think migraines may be caused by functional changes in the trigeminal nerve system, a major pain pathway in your nervous system,...
Source: MayoClinic

Risk factors
... Many people with migraines have a family history of migraine. If both your parents have migraines, there''s a good chance you will too. Even if only one of your parents has migraines, you''re still at...
Source: MayoClinic

When to seek medical advice
... Migraines are a chronic disorder, but they''re often undiagnosed and untreated. If you experience signs and symptoms of migraine, track and record your attacks and how you treated them. Then make an a...
Source: MayoClinic

Screening and diagnosis
... If you have typical migraine headaches or a family history of migraines, your doctor will likely diagnose the condition on the basis of your medical history and a physical exam. But if your headaches ...
Source: MayoClinic