a continually developing neurodegenerative illness inflicted by the death of dopamine-generating neurons in the substantial nigra of the brain, that manages equilibrium and arranges and organizes muscle moving. Indicators commonly start later in life with slight tremors, increasing rigidity of the limbs, and deceleration of voluntary motions.

PARKINSON'S DISEASE: "Michael J. Fox was diagnosed with Parkinson's Disease in 1991."