Abstract Background The International Parkinson and Movement Disorders Society criteria
for mild cognitive impairment in PD need validation. The objectives of this present study …

Background Functional dependency, the need for help in basic activities of daily living, is an
important patient‐oriented outcome. We aimed to describe the development of dependency …

Background Late‐stage parkinsonism and Parkinson's disease (PD) are insufficiently
studied population. Although neuropsychiatric symptoms (eg, psychosis, depression …

Cognitive decline is common in Parkinson's disease (PD), even in the early motor stage, and
this non‐motor feature impacts quality of life and prognosis tremendously. In this article, we …

Abstract Background In Parkinson's disease, the association between objective and patient-
reported measures of cognitive dysfunction is unknown and highly relevant to research and …

Introduction Subjective cognitive complaints (SCC) and affective symptoms are highly
prevalent in Parkinson's Disease (PD). In early PD, SCC prevalence and its affective …

Background Mild cognitive impairment in Parkinson's disease (PD-MCI) is a common clinical
condition. Understanding its pathology and clinical features is important for early …

The aim of this study was to establish the rate of progression from mild cognitive impairment
(MCI) to dementia in patients with Parkinson's disease (PD). PD patients without dementia …

Background: Cognitive impairment is one of the most frequent and disabling non-motor
symptoms in Parkinson disease (PD) and encompasses a continuum from mild cognitive …

Introduction Parkinson's disease dementia (PDD) is associated with poorer quality of life
(QoL). Prior to the onset of PDD, many patients experience progressive cognitive …