title: A comparison of two iatrogenic dyskinesias.
abstract: The authors compared the regions of motor involvement in levodopa-induced dyskinesia and neuroleptic-induced tardive dyskinesia. Significantly more patients with tardive dyskinesia than parkinsonian patients with levodopa-induced dyskinesia had lip and tongue movements. Patients with tardive dyskinesia had significantly higher mean AIMS scores in the orofacial region than parkinsonian patients with levodopa-induced dyskinesia. More patients with levodopa-induced dyskinesia than those with tardive dyskinesia demonstrated hyperkinesia in the lower extremities. Limb and truncal movements in levodopa-induced dyskinesia were worse in patients with more severe parkinsonism and correlated positively with the length of Parkinson's disease. These findings suggest that these dyskinesias may involve different pathophysiological mechanisms.
mesh_terms: D014150:Antipsychotic Agents / Q000009:adverse effects*; D004409:Dyskinesia, Drug-Induced / Q000209:etiology* / Q000503:physiopathology; D005121:Extremities / Q000503:physiopathology; D005152:Facial Muscles / Q000503:physiopathology; D005260:Female; D006801:Humans; D007049:Iatrogenic Disease; D007568:Jaw / Q000503:physiopathology; D007980:Levodopa / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000188:drug therapy; D014059:Tongue / Q000503:physiopathology
chemical_list: D014150:Antipsychotic Agents; D007980:Levodopa