Although diagnosed by characteristic motor features, Parkinson's disease may be preceded,
and is frequently accompanied by, a wide range of cognitive and neuropsychiatric features …

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

Depression is a common comorbid condition in Parkinson's disease (PD) and a major
contributor to poor quality of life and disability. However, depression can be difficult to …

Depression has been reported in several studies to be more common in Parkinson's disease
(PD) patients than in the general population, and there may be overlap in the …

Depression, anxiety and apathy are common mood disturbances in Parkinson's disease
(PD) but their pathophysiology is unclear. Advanced neuroimaging has been increasingly …

Clinical, neuroimaging, and pathologic studies have provided data suggesting that a variety
of nonmotor symptoms can precede the classic motor features of Parkinson disease (PD) by …

In this review, we focus on the relationship among Parkinson's disease (PD), stress and
depression. Parkinson's disease patients have a high risk of developing depression, and it is …

Major depression is present, at any given time, in 20–40% of Parkinson's disease (PD)
patients, several times the prevalence in the general population. In addition, depression may …

Background The proportion of the world's elderly population continues to rise, and the
treatment and improvement of neurodegenerative diseases have become issue of public …

Objective The objective of this study was to compare the sensitivity, specificity, and
diagnostic accuracy of the 15-item Geriatric Depression Scale (GDS-15) and the Hamilton …