The impact of Parkinson's disease (PD) dementia is substantial and has major functional
and socioeconomic consequences. Early prediction of future cognitive impairment would …

Data on the prevalence and severity of cognitive impairment among patients with newly
diagnosed idiopathic Parkinson's disease (PD) is limited. Using a prospectively collected …

There is growing interest in identifying Parkinson's disease (PD) patients with mild cognitive
impairment (PD‐MCI), but widely disparate criteria have been used. We assessed 143 PD …

Cognitive impairment (CI) and dementia are frequent and debilitating features associated
with Parkinson's disease (PD). Formal neuropsychological examination is required to …

Two hundred and twenty‐one subjects with Parkinson's disease (PD) were examined using
the Mini–Mental Status Examination (MMSE) and Montreal Cognitive Assessment (MoCA) …

Patients with Parkinson's disease (PD) often have cognitive deficits from the time of
diagnosis. Except in patients with dementia, the impact of cognitive symptoms on daily …

This study was undertaken to determine the prevalence and correlates of cognitive
impairment (CI) and neuropsychiatric symptoms (NPS) in early, untreated patients with …

We analyzed the association of neuropsychological test impairment at baseline with the
development of dementia in idiopathic Parkinson's disease (PD) patients. A cohort of …

Our purpose was to characterize a state of mild cognitive impairment (MCI) in Parkinson's
disease (PD)(PD‐MCI) that would be analogous to the MCI that is posited as a precursor of …

A substantial percentage of patients with newly diagnosed Parkinson's disease without
dementia are reported to be affected by cognitive impairment (CI). In practice, however, CI is …