What Do You Know About Parkinson's Disease?

This illness has existed for thousands of years. Learn more about Parkinson's disease by taking this quiz.

1. Parkinson's disease is marked by a shortage of which chemical in the brain?
2. How many Americans are affected by Parkinson's disease?
3. What is the average age when Parkinson's disease first appears?
4. What is often the first symptom of Parkinson's disease?
5. How is Parkinson's diagnosed?
6. How is Parkinson's treated?