title: Familial occurrence of tardive dyskinesia.
abstract: Tardive dyskinesia remains a poorly understood consequence of neuroleptic treatment for psychiatric illness. To date, there have been no reports in the literature regarding the presence of dyskinetic symptomatology in first degree relatives or other family members. The following two cases reveal the development of abnormal involuntary movement in brothers with similar mental illness and treatment histories, and suggest the importance of examining neuroleptically treated relatives of an affected individual for dyskinesia and may suggest a genetic factor in vulnerability.
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects / Q000627:therapeutic use; D002908:Chronic Disease; D004409:Dyskinesia, Drug-Induced / Q000235:genetics*; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000188:drug therapy
chemical_list: D014150:Antipsychotic Agents