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Chorea

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Updated June 18, 2014

Definition: Chorea means abnormal movement of voluntary muscles. It comes from a problem with the central nervous system. During chorea, there are brief irregular muscle contractions. These movements have no purpose and occur randomly without any pattern or rhythm. Chorea may interfere with coordination and walking.

Huntington's chorea, usually called Huntington's disease, is a hereditary, degenerative disorder of the central nervous system. Symptoms don't usually appear until mid-life (40s or 50s). Chorea develops because of the destruction of brain cells.

In Sydenham chorea, the chorea comes from an autoimmune reaction after a streptococcal infection. It usually affects children, may range from mild to severe, and eventually goes away.

Pronunciation: ko-REE-ah
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