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Home | About Parkinson's Disease | Cause of Parkinson's Disease
Your movement is controlled by signals sent by your brain through the nervous system to your muscles. In people with Parkinson’s disease, this control system becomes faulty: the brain cells that make dopamine, a chemical messenger or neurotransmitter essential for controlling movement, are being progressively lost.
The loss of these cells means there is less communication between the different parts of your brain. This means you can’t control the way you move in the usual way.
Normal Dopamine Levels 
Low Dopamine Levels
The cause of this change in the brain is uncertain: The cells that produce dopamine may have been damaged. This could be from:
These events could make these cells more susceptible to damage later in life.
Parkinson's disease may also be passed down in your family through your genes. People with this less common form of the disease may develop symptoms as early as 20 years of age.
