Parkinson’s is a progressive, chronic, neurodegenerative disorder associated with damage to and loss of dopamine-producing nerve cells (neurons) deep in the brain. Dopamine is a chemical that helps regulate your body’s movement. Less dopamine leads to less mobility and less control over your movements. In fact, Parkinson’s is officially classified as a movement disorder because it involves damage to the areas of the brain that affect the speed, quality, fluency and ease of movement. Current medications for Parkinson’s replace or enhance lost dopamine.