What is Parkinson's disease?
Parkinson's disease is a disorder that affects the nervous system and causes problems with muscle movement. Normally, nerve cells that make a chemical called dopamine send signals to help coordinate your movements. In people who have Parkinson's disease, these cells die or do not work properly. The disease's effects get worse over time. There is no cure for Parkinson’s disease, but treatment can help relieve the symptoms.
Written by familydoctor.org editorial staff