Movement Disorders

Dyskinesia

Dyskinesia refers to an impairment of voluntary movement. The resultant tics and other movements are often referred to as dyskinesias. Dyskinesia is sometimes caused by long-term use of anti-psychotic drugs or other dopamine antagonists like the antiemetic metoclopramide. The effect of these drugs can be tardive, meaning the dyskinesia continues or appears even after the drugs are no longer taken (see Tardive dyskinesia). In context of Parkinson's disease, dyskinesias are often the result of ...