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Cyproterone to treat aggressivity in dementia: a clinical case and systematic review.
Journal of Psychopharmacology 2011 January
Aggressivity is a common problem in the management of elderly patients with dementia. Medications currently used to diminish aggressive behaviour in dementia can have problematic side effects. We present a case and systematic review of the current knowledge about the use of cyproterone acetate to treat aggressivity (excluding hypersexuality related behaviours) in dementia. An 82-year-old man required psychiatric inpatient admission due to agitation and aggressivity and was diagnosed with Alzheimer's disease. After failed trials of atypical antipsychotics (quetiapine 100 mg/day and risperidone 1 mg/day), drugs for dementia (memantine 20 mg/day and rivastigmine 9 mg/day) and benzodiazepines (lorazepam 0.5-1 mg prn) he was started on cyproterone acetate titrated up to 50 mg twice daily. After two weeks he was calmer and did not express aggressivity. Two months later he was discharged to a community placement where he subsequently remained settled on cyproterone. We reviewed literature on the use of cyproterone in aggressivity (excluding hypersexuality) associated with dementia. We searched the main medical databases including articles in English, Spanish, French and Italian. Only one randomized double-blind trial was found, comparing cyproterone with haloperidol (n = 27). Cyproterone was more effective controlling aggressivity and had lower incidence of side effects. In the one uncontrolled naturalistic observational study identified (n = 19), cyproterone was associated with significant reductions in aggressivity without causing major side effects. Further literature was limited to theoretical discussions. Despite there being evidence to support our observations of a useful role for cyproterone in aggressivity in dementia, further studies are needed to establish the efficacy and safety of this therapeutic option.
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