Neurodegenerative diseases are a common cause of morbidity and cognitive impairment in
older adults. Most clinicians who care for the elderly are not trained to diagnose these …

Aging is a natural process that is associated with cognitive decline as well as functional and
social impairments. One structure of particular interest when considering aging and …

Dementia is increasingly being recognized in cases of Parkinson's disease (PD); such cases
are termed PD dementia (PDD). The spread of fibrillar α-synuclein (α-syn) pathology from …

Importance It is increasingly evident that Parkinson disease (PD) is not a single entity but
rather a heterogeneous neurodegenerative disorder. Objective To evaluate available …

Dementia is one of the most common and important aspects of Parkinson's disease and has
consequences for patients and caregivers, and has health-related costs. Mild cognitive …

The broad importance of dementia is undisputed, with Alzheimer's disease justifiably getting
the most attention. However, dementia with Lewy bodies and Parkinson's disease dementia …

Abstract See Gratwicke and Foltynie (doi: 10.1093/brain/awx333) for a scientific commentary
on this article. Cognitive impairments are a prevalent and disabling non-motor complication …

Affective disorders, cognitive decline, and psychosis have long been recognized as common
in Parkinson disease (PD), and other psychiatric disorders include impulse control …

Objectives: While plasma biomarkers have been proposed to aid in the clinical diagnosis of
Alzheimer disease (AD), few biomarkers have been validated in independent patient …

Cognitive decline is one of the most frequent and disabling nonmotor features of Parkinson's
disease. Around 30% of patients with Parkinson's disease experience mild cognitive …