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Mov Disord. 2018 Apr;33(4):503-510. doi: 10.1002/mds.27323. Epub 2018 Feb 28.

Evolution of diagnostic criteria and assessments for Parkinson's disease mild cognitive impairment.

Author information

1
Department of Neurological Sciences, Section of Parkinson Disease and Movement Disorders, Rush University Medical Center, Chicago, Illinois, USA.
2
Department of Neurology, University of Colorado, Department of Neurology, Aurora, Colorado, USA.
3
Department of Neurosciences, University of California San Diego, Department of Neurosciences, San Diego, California, USA.
4
Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, United Kingdom.

Abstract

Mild cognitive impairment has gained recognition as a construct and a potential prodromal stage to dementia in both Alzheimer's disease and Parkinson's disease (PD). Although mild cognitive impairment has been recognized in the Alzheimer's disease field, it is a relatively more recent topic of interest in PD. Recent advances include the development of diagnostic criteria for PD mild cognitive impairment to provide more uniform definitions for clinical and research use. Studies reveal that mild cognitive impairment in PD is frequent, but also heterogeneous, with variable clinical presentations, differences in its progression to dementia, and likely differences in underlying pathophysiology. Application of the International Parkinson and Movement Disorder Society PD Mild Cognitive Impairment Task Force diagnostic criteria has provided insights regarding cognitive measures, functional assessments, and other key topics that may require additional refinement. Furthermore, it is important to consider definitions of PD mild cognitive impairment in the landscape of other related Lewy body disorders, such as dementia with Lewy bodies, and in the context of prodromal and early-stage PD. This article examines the evolution of mild cognitive impairment in concept and definition, particularly in PD, but also in related disorders such as Alzheimer's disease and dementia with Lewy bodies; the development and application of International Parkinson and Movement Disorder Society PD Mild Cognitive Impairment diagnostic criteria; and insights and future directions for the field of PD mild cognitive impairment.

KEYWORDS:

biomarkers; dementia; diagnostic criteria; mild cognitive impairment; neuropsychological

PMID:
29488270
DOI:
10.1002/mds.27323

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