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Parkinson Disease - What You Need to Know - Drugs.com

What is Parkinson disease (PD)? PD is a long-term movement disorder. The brain cells that control movement start to die and cause changes in how you move, feel, and act. Even though PD may progress and have a severe impact on your daily life, it is not a life-threatening disease. What causes PD? The exact cause of PD is unknown.