Parkinson's disease is a slowly progressing disease of the nervous system that causes people to lose control over their muscles.
About 1 in 250 people over the age of 40, and about 1 in 100 people aged 65 or older, are affected by Parkinson's disease. Although the average age of onset is 57, Parkinson's occasionally appears in childhood. Men are more likely to develop Parkinson's than women.
Parkinson's is not a fatal condition. However, the end stage of the disease can lead to pneumonia, choking, severe depression, and death.