In a prospective, open-label study, 12 patients manifesting psychosis
associated with Parkinson's disease were treated with clozapine. Cognitive
functioning and type of psychotic symptoms were measured prior to
treatment, and changes in psychiatric and behavioral symptoms were studied
by using the Behave-AD Scale. Significant resolution in psychotic symptoms
was found and improvement in global behavioral status observed in all
cases, with 10 patients maintaining improvement at follow-up. Careful
initiation and titration of the drug resulted in few side effects, and
dementia was not found to be a contraindication to such treatment.Abstract Teaser