Pathophysiology The establishment of a model of parkinsonism through the administration
of MPTP to nonhuman primates has provided important insights into new therapeutic …

Parkinson's disease is a neurodegenerative disorder characterized by motor and nonmotor
symptoms. Psychosis is a common feature of Parkinson's disease. Parkinson's disease …

One‐third of the 149 people recruited 15 to 18 years ago in the Sydney Multicenter Study of
Parkinson's disease have survived. The original study compared low‐dose levodopa with …

Hallucinations, mainly of a visual nature, are considered to affect about one-quarter of
patients with Parkinson's disease. They are commonly viewed as a side-effect of …

Objectives The description of minor hallucinatory phenomena (presence, passage
hallucinations) has widened the spectrum of psychosis in Parkinson's disease (PD). Minor …

The majority of care of patients with Parkinson's disease (PD) is provided by informal
caregivers; their caregiving not only offers physical and emotional support for patients but …

A body of literature now exists, which demonstrates that idiopathic Parkinson's disease (PD)
has a major negative impact on quality of life (QoL), and that depression and cognitive …

Objective: To explore the profile of neuropsychiatric symptoms in patients with dementia
associated with Parkinson's disease (PDD). Methods: 537 patients with PDD drawn from an …

There are no standardized diagnostic criteria for psychosis associated with Parkinson's
disease (PDPsy). As part of an NIH sponsored workshop, we reviewed the existing literature …

As a more complete picture of the clinical phenotype of Parkinson's disease emerges, non-
motor symptoms have become increasingly studied. Prominent among these non-motor …