Certain clinical features may identify those who may be in prodromal phase of Parkinson disease
Benefits persist four weeks after treatment
Findings persist across demographic groups and independent of depression and other prominent risk factors, including genetic risk
Exposure to water contaminated with volatile organic compounds, including trichloroethylene, linked to increased risk for Parkinson disease
Cognition partially mediated the association between race/ethnicity and 39-item Parkinson disease questionnaire scores
Association found for Alzheimer and Parkinson disease cases diagnosed before 60 years of age