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The British Journal of Psychiatry 171: 265-268 (1997)
© 1997 The Royal College of Psychiatrists

Prevalence of spontaneous dyskinesia in schizophrenic and non- schizophrenic psychiatric patients [published erratum appears in Br J Psychiatry 1998 Jan;172:97]

WS Fenton, CR Blyler, RJ Wyatt and TH McGlashan
Chestnut Lodge Research Institute, Rockville, MD 20850, USA.

BACKGROUND: Although movement disorders have been noted among patients never exposed to neuroleptic medications, the specificity of spontaneous dyskinesia to schizophrenia has rarely been examined. METHOD: By abstracting detailed case records, we compared the prevalence of dyskinetic movements between 94 neuroleptic-naive schizophrenic patients and 179 patients with other psychiatric disorders. RESULTS: Dyskinetic movements were more common among patients with schizophrenia than among those with all other diagnoses, and were most often noted in the body areas typically associated with tardive dyskinesia. CONCLUSIONS: Spontaneous dyskinesia appears to be relatively specific to schizophrenia and may be intrinsic to the pathophysiology of the disorder.


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