Parkinson’s disease is a disorder of certain nerve cells in a part of the brain (substantia nigra) that produces dopamine. Dopamine is a chemical messenger, or neurotransmitter, that the brain uses to help direct and control movement. In Parkinson’s disease, these dopamine-producing nerve cells break down, dopamine levels drop, and brain signals directing movement become abnormal.

There is no known cure for Parkinson’s disease. Several different types of medication may be used to relieve symptoms. Brain surgery or deep brain stimulation also may be used to control symptoms in some people.

For more information visit: