What Is The Cause Of Chorea?

What Is The Cause Of Chorea? Chorea is an abnormal involuntary 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 brain that control movement. Why do kids with chorea have rheumatic fever? Sydenham chorea (SC) is a neurological disorder