Background: Depressive disorders may affect up to 50% of patients with Parkinson disease
(PD) and are associated with increased disability and reduced quality of life. No previous …

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 …

Background: Depression frequently accompanies Parkinson's disease (PD) and may have a
negative impact on activities of daily living, cognitive performance, and quality of life …

Background: This study examined the age-and gender-specific risk of depression in
demented and non-demented participants, its symptom structure, and associated clinical …

Objective: The Methods of Optimal Depression Detection in Parkinson's Disease (MOOD-
PD) study compared the psychometric properties of 9 depression scales to provide guidance …

We examined correlates of depression in patients whose onset of Parkinson's disease (PD)
began before age 55 (early-onset group) compared with patients whose onset was after age …

Objective Depression in Parkinson disease (PD) is a common problem that worsens quality
of life and causes disability. However, little is known about the longitudinal impact of …

BACKGROUND: Depression is common in Parkinson's disease (PD) and contributes
significantly to a reduced quality of life in PD patients. The determinants of depression in PD …

By some estimates, nearly half of patients with PD also suffer depression. Because features
of PD frequently overlap with typical manifestations of major affective disorder (or mild …

Depression has been shown to be more common in Parkinson's disease (PD) than in other
chronic and disabling disorders. Neurochemical and functional disturbances are important …