extrapyramidal dyskinesia

ex·tra·py·ram·i·dal dys·ki·ne·si·a

(eks'tră-pir-am'i-dăl dis'ki-nē'zē-ă)
Abnormal involuntary movement attributed to pathologic states of one or more parts of the striate body and characterized by insuppressible, stereotyped, automatic movements that cease only during sleep (e.g., parkinsonism, chorea, athetosis, hemiballism).
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