Malene Flensborg Damholdt

Subjective cognitive complaints in patients with Parkinson's disease

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Mild cognitive impairment (MCI) is common in Parkinson's disease (PD), affecting almost all PD patients at some time. It has been shown that PD patients, who express subjective cognitive complaints are at a higher risk of eventually developing PD-MCI. This is corroborated by the Move-ment 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 PD patient to receive a diagnosis of PD-MCI. Nevertheless, there is currently no standardised measurement available for assessing subjective cognitive complaints. Therefore, this review aims to generate an overview of how subjective cognitive complaints are commonly operationalised 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 regards 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 regards to the measurement hereof. This article is protected by copyright. All rights reserved.

Original languageEnglish
JournalActa Neurologica Scandinavica
Publication statusE-pub ahead of print - 21 Aug 2019

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