In the long-term, with progression of the illness, Parkinson's disease dementia affects up to
90% of patients with Parkinson's disease. With increasing life expectancy in western …

Cognitive impairment in patients with Parkinson's disease is gaining increased clinical
significance owing to the relative success of therapeutic approaches to the motor symptoms …

Parkinson's disease dementia is neuropathologically characterized by aggregates of α-
synuclein (Lewy bodies) in limbic and neocortical areas of the brain with additional …

Dementia has been increasingly more recognized to be a common feature in patients with
Parkinson's disease (PD), especially in old age. Specific criteria for the clinical diagnosis of …

Parkinson's disease is a neurodegenerative disorder classically characterized by motor
symptoms. Among them, hypomimia affects facial expressiveness and social communication …

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 …

Parkinson's disease is a progressive neurodegenerative disorder of aging. The hallmark
pathophysiology includes the development of neuronal Lewy bodies in the substantia nigra …

Cognitive impairment is common in Parkinson's disease (PD) and involves attentional,
executive, visuospatial, and memory dysfunctions. Dementia is more frequently encountered …

Objective To assess regions and patterns of brain atrophy in patients with Parkinson disease
(PD) with normal cognition (PD-NC), mild cognitive impairment (PD-MCI), and dementia …

Background: Dementia is common in Parkinson's disease, but the underlying brain
pathology is not yet fully understood. Aim: To examine the changes in the brain of patients …