An estimate of the prevalence of dementia in idiopathic Parkinson's disease.

  title={An estimate of the prevalence of dementia in idiopathic Parkinson's disease.},
  author={Richard P. Mayeux and Yaakov Stern and Ralf Rosenstein and Karen S. Marder and Alison Hauser and Lucien Cote and Stanley Fahn},
  journal={Archives of neurology},
  volume={45 3},
A review of the records for evidence of dementia using criteria adapted from the third edition of the Diagnostic and Statistical Manual of Mental Disorders in every patient (hospitalized and outpatient) with parkinsonism at a major medical center during an 18-month period revealed an overall prevalence of 10.9% in 339 patients with idiopathic Parkinson's disease. Demented patients were older, had a later age at onset of motor manifestations, and a more rapid progression of physical disability… CONTINUE READING

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