Abstract
The objective of this study was to determine whether extrapyramidal side effects of neuroleptics are associated with aggressive behaviour in schizophrenia. Thirty-one physically aggressive patients meeting DSM-III-R criteria for schizophrenia were compared with 31 matched non-aggressive patients in relation to their extrapyramidal side effects, including drug-induced parkinsonian (DIP) symptoms, akathisia and tardive dyskinesia. The aggressive group had significantly more severe DIP side effects than the non-aggressive group, but the association disappeared when level of psychopathology was controlled for. The aggressive group had more severe akathisia than the non-aggressive group, but the difference was not statistically significant. The two groups did not suffer in the severity of tardive dyskinesia. There was no significant, independent effect of extrapyramidal symptoms on aggressive behaviour in our sample of schizophrenic patients.
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