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A prospective study of tardive dyskinesia was carried out to gain information regarding the natural history of the condition and to identify risk factors. Out of an original cohort of 182 psychiatric patients receiving maintenance antipsychotic drugs 99 were available for reassessment after 3 years. In this follow-up group the point prevalence of oro-facial(More)
A reliable method for recording the site and duration of purposeless movements was devised. With this method 267 subjects were studied, 182 of whom had been exposed to neuroleptics. The results were submitted to a principal components analysis and 3 movement dimensions emerged. One group of movements resembled a parkinsonian syndrome. The other 2 groups of(More)
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