Psychosis in Parkinson's disease

Postgrad Med J. 2005 Oct;81(960):644-6. doi: 10.1136/pgmj.2004.032029.


Psychosis is common in Parkinson's disease (PD), particularly in its later stages. The symptoms range from comparatively minor illusions, vivid dreams, and occasional, non-disturbing visual hallucinations to frank psychosis. The pathogenesis of psychosis in PD is not fully known. Management of psychosis in PD requires a multidisciplinary approach. Some of the newer atypical antipsychotics are effective against psychosis with no significant worsening of PD. Psychosis in PD is associated with poor quality of life for patients and the carers.

Publication types

  • Review

MeSH terms

  • Antipsychotic Agents / therapeutic use
  • Electroconvulsive Therapy / methods
  • Hallucinations / etiology
  • Humans
  • Parkinson Disease / psychology*
  • Psychotic Disorders / etiology*
  • Psychotic Disorders / therapy
  • Risk Factors


  • Antipsychotic Agents