Prevalence of impaired odor identification in Parkinson disease with imaging evidence of nigrostriatal denervation

J Neural Transm (Vienna). 2016 Apr;123(4):421-4. doi: 10.1007/s00702-016-1524-7. Epub 2016 Feb 24.

Abstract

There is wide variability in the reported prevalence rates of abnormal smell in Parkinson disease (PD). This study assessed the prevalence of abnormal smell, using the University of Pennsylvania Smell Identification Test (UPSIT), in 183 patients with PD with confirmed PET imaging evidence of nigrostriatal denervation. Impaired olfaction in this sample was nearly universal (97.8 %). Wide-ranging prior olfactory impairment estimates may reflect not only uncertainty regarding diagnostic classification, but also the use of inaccurate normative data and differences in olfactory tests used.

Keywords: Aging; Dopamine; Olfaction; PET; Parkinson disease.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Female
  • Humans
  • Male
  • Middle Aged
  • Olfaction Disorders / epidemiology*
  • Olfaction Disorders / etiology
  • Parkinson Disease / complications*
  • Parkinson Disease / pathology*
  • Positron-Emission Tomography
  • Prevalence
  • Substantia Nigra / pathology*