Parkinson's disease is a chronic, progressive brain and nerve disease that affects a small area of neurons in an area of the brain known as the substantia nigra. These cells normally produce dopamine, a chemical that transmits signals between areas in the brain. When working normally, these signals coordinate smooth and balanced muscle movement. Parkinson's disease however, causes the neurons to die, leading to a lack of dopamine in the brain, consequently causing people to lose the ability to control their body movements normally . To date, there is no known prevention or cure for Parkinson's disease. But, there are several treatment, including drug therapy and/or surgery that can reduce the symptoms, and make living with the disease easier .

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