Parkinson's disease

Updated: 2017-06-13

Overview

Parkinson's disease is a progressive disorder of the nervous system that affects movement. Nerve cell damage in the brain causes dopamine levels to drop, leading to the signs of Parkinson's.

Symptoms

It often starts with a tremor in 1 hand. Other symptoms are slow movement, stiffness, and loss of balance.

Treatments

Medications can help control symptoms.