Background: Neuropsychiatric symptoms are common in Parkinson's disease (PD) and have
important clinical consequences for patients, caregivers and society. Few studies of …

Objective To evaluate the prevalence of psychosis associated with Parkinson's disease
(PSY-PD) in its early stages, its incidence over a 24 month follow-up period and the …

OBJECTIVES Disturbances of cognition and emotion are common in patients with
Parkinson's disease. Most previous studies of psychopathology in Parkinson's disease have …

Objective To investigate the prevalence, incidence, risk factors, and concomitants of
Parkinson disease (PD)–associated psychosis (PDP) in a population-based prevalent …

Neuropsychiatric symptoms (NPS) of Parkinson's disease (PD) are of growing diagnostic
and therapeutic importance. Data on their prevalence and characteristics have been …

Objective To determine whether neuropsychological measures differ between patients with
idiopathic Parkinson's disease (PD) who acquire dementia within 10 years of disease onset …

Objectives. To study the relationships between clinical features of Parkinson's disease (PD)
and the development of dementia, depression or psychosis in patients with long-standing …

Behavioural disturbances are frequently observed in Parkinson's disease (PD), including
mood and anxiety disorders. The existence of a comorbidity between such psychiatric …

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

Objective: To evaluate the course and predictors of neuropsychiatric symptoms (NPS) and
cognition in patients with de novo Parkinson disease (PD). Methods: Cross-sectional study …