Parkinson's disease is a degenerative disorder of the central nervous system that impairs motor skills, speech, and other functions through decreased stimulation of the motor cortex. Common symptoms include muscle rigidity, tremors, poor balance, and slowed movement. While there are no cures, drugs like levodopa and amantadine can help minimize symptoms, and deep brain stimulation or rare surgeries may be used when drugs fail. About 50,000 Americans are diagnosed each year, with over 500,000 affected at any given time.

1. PARKINSON’S DISEASE Samir Patel & Ronak Gandhi Adolf Hitler Muhammad Ali Ozzy Osbourne Michael J. Fox