Refers to several conditions, many of them neurodegenerative, that prevent normal movement. Some are characterized by either lack of movement (bradykinesia, hypokinesia, etc) or excessive movement (chorea, athetosis, dystonia, tremor). Besides Parkinson's, other conditions often defined as movement disorders include essential tremor, multiple system atrophy, progressive supranuclear palsy, Huntington's disease, Tourette's syndrome and cerebral palsy.

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Dyskinesia refers to an impairment of voluntary movement. The resultant tics ...
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Movement Disorders Other

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Angelman Syndrome Information Page
... Angelman syndrome is a chromosomal (gene-linked) disease that causes neurological problems. The physician Harold Angelman first identified the syndrome in 1965, when he described several children in h...
Source: National Institute of Neurological Disorders and Stroke

Ataxias and Cerebellar/Spinocerebellar Degeneration Information Page
... Ataxia often occurs when parts of the nervous system that control movement are damaged. People with ataxia experience a failure of muscle control in their arms and legs, resulting in a lack of balance...
Source: National Institute of Neurological Disorders and Stroke

   

Movement Disorders Articles

  • Angelman syndrome
    ... Angelman syndrome is a complex genetic disorder that affects the brain and nervous system. Characteristic features of the condition include developmental delay or mental retardation, severe speech imp...
  • Angelman Syndrome Information Page
    ... Angelman syndrome is a chromosomal (gene-linked) disease that causes neurological problems. The physician Harold Angelman first identified the syndrome in 1965, when he described several children in h...
  • Ataxias and Cerebellar/Spinocerebellar Degeneration Information Page
    ... Ataxia often occurs when parts of the nervous system that control movement are damaged. People with ataxia experience a failure of muscle control in their arms and legs, resulting in a lack of balance...
  • Chorea Information Page
    ... Chorea is an abnormal voluntary movement disorder, one of a group of neurological disorders called dyskinesias, which are caused by overactivity of the neurotransmitter dopamine in the areas of the br...
  • Hallervorden-Spatz Disease Information Page
    ... Hallervorden-Spatz disease, also called Neurodegeneration with Brain Iron Accumulation, is a rare, inherited, neurological movement disorder characterized by progressive degeneration of the nervous sy...
  • Hypertonia Information Page
    ... Hypertonia is a condition marked by an abnormal increase in muscle tension and a reduced ability of a muscle to stretch. It is caused by injury to motor pathways in the central nervous system, which c...
  • Joubert Syndrome Information Page
    ... Joubert syndrome is a rare brain malformation characterized by the absence or underdevelopment of the cerebellar vermis - an area of the brain that controls balance and coordination. The most common f...
  • Machado-Joseph Disease Fact Sheet
    ... Machado-Joseph disease (MJD)-also called spinocerebellar ataxia type 3-is a rare hereditary ataxia. (Ataxia is a general term meaning lack of muscle control.) The disease is characterized by clumsines...
  • Multiple System Atrophy Information Page
    ... Multiple system atrophy (MSA) refers to three slowly progressive related disorders that affect the central and autonomic nervous systems. The disorders are characterized by their foremost symptoms: ol...
  • Myoclonus Fact Sheet
    ... Myoclonus describes a symptom and generally is not a diagnosis of a disease. It refers to sudden, involuntary jerking of a muscle or group of muscles. Myoclonic twitches or jerks usually are caused by...

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