Share this site with others using one of these sharing tools.
To link to this article, paste this block of HTML code onto your webpage.
Guidelines for sites linking to mayoclinic.orgNew York University, New York, NY
Neurology, University of Pennsylvania, Philadelphia, PA
Parkinson's Disease and Movement Disorders, University of Pennsylvania, Philadelphia, PA
Professor of Neurology
See a listing of publications on PubMed, a service of the National Library of medicine.
See a description of research activities.
Learn about treatment of diseases and becoming a patient. Read more about medical services.
.
Find Mayo Clinic on