Parkinson's disease, explained
Know the causes, symptoms and treatment of this nerve disorder.
Jan, 2026
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Parkinson's disease, a chronic and progressive nerve disorder, affects as many as one million Americans, with 60,000 people diagnosed each year. You might have questions like: What is Parkinson’s disease? Who gets it, what are the symptoms, and is there a cure? Here’s what you need to know.
Written byPatrick Sullivan.
Medically reviewed byMark Arredondo, MD.