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 …

To determine the incidence and possible risk factors for dementia in patients with clinically
probable Parkinson's disease (PD), a cohort (n= 86) of nondemented patients over 65 years …

The objective of this study was to assess the temporal relationship between changes in
predominant motor symptoms and incident dementia in Parkinson's disease (PD). A …

Mood disorders are the most common psychiatric problem associated with Parkinson's
disease (PD), and have a negative impact on disability and quality of life. Accurate diagnosis …

Abstract The “Ardouin Scale of Behavior in Parkinson's Disease” is a new instrument
specifically designed for assessing mood and behavior with a view to quantifying changes …

Many patients with Parkinson's disease (PD) have clinically significant anxiety, depression,
fatigue, sleep disturbance, or sensory symptoms. The comorbidity of these nonmotor …

Evidence suggests that both motor and nonmotor symptoms contribute to health status in
Parkinson's disease. Less clear is how much change in health status can be expected if …

The objective of this study was to examine the validity of the mentation, behavior, and mood
items included in Part I of the Unified Parkinson's Disease Rating Scale (UPDRS) and to …

Idiopathic Parkinson's disease (IPD) has been subclassified on the basis of predominant
motor symptomatology, age at disease onset, depressive affect, and cognitive performance …

Mild cognitive impairment associated with Parkinson's disease (PD) is a risk factor for the
development of dementia. Despite the importance of early identification of mild cognitive …