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Subjective cognitive complaints in patients with Parkinson's disease
Author(s) -
Kjeldsen Pernille Louise,
Damholdt Malene Flensborg
Publication year - 2019
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/ane.13158
Subject(s) - cognition , parkinson's disease , complaint , operationalization , psychology , cognitive impairment , clinical psychology , disease , dementia , movement disorders , medicine , psychiatry , physical medicine and rehabilitation , pathology , political science , law , philosophy , epistemology
Mild cognitive impairment (MCI) is common in Parkinson's disease (PD), affecting almost all patients with PD at some time. It has been shown that patients with PD, who express subjective cognitive complaints, are at a higher risk of eventually developing PD‐MCI. This is corroborated by the Movement Disorders Society's (MDS) diagnostic criteria from 2012 for PD‐MCI, from which it follows that a subjective cognitive complaint must be present in addition to objective cognitive impairment for a patient with PD to receive a diagnosis of PD‐MCI. Nevertheless, there is currently no standardized measurement available for assessing subjective cognitive complaints. Therefore, this review aims to generate an overview of how subjective cognitive complaints are commonly operationalized in the empirical literature as well as whether they are found to be associated with the level of cognitive impairment. The findings revealed that a broad range of measures has been used to obtain subjective cognitive complaints and that there is little consistency between different studies with regard to how they have obtained these complaints, from whom they had obtained them, how many they have obtained, which types of complaints they have obtained and whether they were associated with cognitive impairment. Given the fact that the presence of subjective cognitive complaints is a requirement for setting a diagnosis, there is a need for more methodological consensus with regard to the measurement hereof.

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