In 1990, while filming the movie Doc Hollywood, the actor exhibited some abnormal symptoms that worried everyone on the set! Doctors couldn't quite come up with a reason for his symptoms, and they kept on surfacing as time went on. Shortly after his first episode, in 1991, he was finally diagnosed with Parkinson's disease. Michael's battle with Parkinson's disease has been a public one for many years.
Watch the video above to learn more!