The neurodegenerative process is well established in Parkinson patients presenting to a
physician with early motor signs. There is increasing evidence that a variety of nonmotor …

Background Ten to fifteen percent of Parkinson's disease (PD) patients recruited to clinical
trials have scans without evidence of dopaminergic deficit, whose presence represents a …

Mild cognitive impairment in Parkinson's disease (PD‐MCI) is common and increases the
risk for dementia. Establishing distinct PD‐MCI cognitive subtypes could be valuable for …

Objective: To determine progression and prognostic factors of progression rate of motor
impairment, disability, and quality of life (QoL) in patients with newly diagnosed Parkinson's …

Dementia has been increasingly more recognized to be a common feature in patients with
Parkinson's disease (PD), especially in old age. Specific criteria for the clinical diagnosis of …

Objective The objective of this study was to identify clinical predictors of motor complications
(dyskinesia and motor fluctuations) of levodopa in a prospectively recruited PD cohort using …

ABSTRACT The recently proposed Movement Disorder Society (MDS) Task Force
diagnostic criteria for mild cognitive impairment in Parkinson's disease (PD‐MCI) represent …

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 …

Background Depression is one of the most common nonmotor symptoms associated with
Parkinson's disease (PD), yet the impact of depression on progression of disease is unclear …

We performed a multicenter survey using a semistructured interview in 1,072 consecutive
patients with Parkinson's disease (PD) enrolled during 12 months in 55 Italian centers to …