| extrapyramidal d. |
any of a group of disorders marked by abnormal involuntary movements, alterations in muscle tone, and postural disturbances and involving lesions of the extrapyramidal tract; included are parkinsonism, chorea, athetosis, and others.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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