Mild cognitive impairment in Parkinson's disease: the challenge and the promise

Hubert H Fernandez1, Gregory P Crucian, Michael S Okun

  • 1Department of Neurology, University of Florida, Gainesville, FL, USA. Fernandez@neurology.ufl.edu

Insights

Mild cognitive impairment (MCI) in Parkinson's disease (PD) is a recognized condition. This review proposes a definition and guidelines for its clinical and research evaluation.

Area of Science:

  • Neurology
  • Neuroscience
  • Cognitive Science

Background:

  • Parkinson's disease (PD) is a neurodegenerative disorder.
  • Mild cognitive impairment (MCI) is increasingly recognized in PD patients.
  • Understanding the overlap between PD and MCI is crucial for patient care.

Purpose of the Study:

  • To review the existing literature on Parkinson's disease and mild cognitive impairment.
  • To discuss the neuropsychological, pharmaceutical, and pathological connections.
  • To propose an operating definition and research guidelines for MCI in PD.

Main Methods:

  • Literature review of studies on PD and MCI.
  • Analysis of neuropsychological, pharmaceutical, and pathological data.
  • Synthesis of findings to establish a consensus.

Main Results:

  • Mild cognitive impairment (MCI) is a distinct feature in Parkinson's disease (PD).
  • There is significant overlap in pathology and clinical presentation between PD and MCI.
  • Current clinical criteria for MCI in PD are lacking.

Conclusions:

  • MCI in PD is a valid clinical and research entity.
  • An inclusive operating definition for MCI in PD is proposed.
  • Guidelines for future research and treatment evaluation are suggested.

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