Parkinson's Disease Underlying Cause
The exact cause of Parkinson's disease is unknown. Heredity, infections, and exposure to chemicals may play a role.
Parkinson's disease damages parts of the brain that normally produce dopamine, a chemical messenger in the brain. Without dopamine, parts of the brain (the substantia nigra) that control body movement and coordination do not work correctly.
Continue to Parkinson's Disease Anatomy
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