Extrapyramidal Disorder

**Semantic type:** Disease or Syndrome

**Definition:** A movement disorder caused by defects in the basal ganglia. The clinical manifestations include changes in the muscle tone, dyskinesia, and akinesia. Causes include vascular disorders, degenerative disorders, and antipsychotic drugs.

**Synonyms:** - Extrapyramidal and movement disorder, unspecified - Extrapyramidal disorder