Parkinson's disease is a brain disorder that leads to shaking, stiffness, and difficulty with walking, balance, and coordination. The average age of onset is 60, and about half a million people in the United States have the disease. Although Parkinson’s cannot be cured, medicines can often provide dramatic relief from the symptoms.
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The information on Parkinson’s Disease was developed for NIHSeniorHealth by the National Institute of Neurological Disorders and Stroke (NINDS) at NIH.