Harvard University
Harvard University: Neurosurgical Service
This site from Harvard University offers a rating system of diagnosing Parkinson's Disease. It also presents the Unified Parkinson Disease Rating Scale (UPDRS) which measures mentation, behavior and mood, activities in daily life and...
Other
National Parkinson Foundation: Parkinson's Disease
A thorough look at Parkinson's Disease including information about symptoms, diagnosis, treatment, and surgery.
Other
Health Communities: Parkinson's Disease
This site discusses the mystery and complexity of Parkinson's Disease. It mentions the history of the disease, signs and symptoms and incidence.
Other
Parkinson's Disease Foundation: Prescription Medications
This site discusses various treatments including medication and surgery to treat, not cure, Parkinson's Disease. Additional information is located on the left side of this site.
WebMD
Web Md: Introduction to Parkinson's Disease
This site from WebMD Health contains a thorough introduction to the causes of Parkinson's Disease, its signs and symptoms, and its atypical variants. The information is fairly in-depth and very interesting in its descriptions.