Fox was diagnosed with Parkinson's disease in 1991, at age 29, and disclosed his condition to the public in 1998. Fox semi-retired from acting in 2000 as the symptoms of his disease worsened. He has since become an advocate for research toward finding a cure; he created the Michael J. Fox Foundation , and on March 5, 2010, Sweden's Karolinska Institutet gave him a honoris causa doctorate for his work in advocating a cure for Parkinson's disease. 
Michael Fox (February 27, 1921 – June 1, 1996) was an American character actor who was in numerous movies and television roles. Some of his most famous recurring roles were as various autopsy physicians in Perry Mason , as Coroner George McLeod in Burke's Law , as Amos Fedders in Falcon Crest , and as Saul Feinberg in The Bold and the Beautiful .
In 1982, a struggling young Canadian-born actor named Michael J. Fox achieved his big breakthrough when he began a run portraying Alex P. Keaton, the conservative son of decidedly liberal parents Steven and Elyse Keaton, on the hit NBC sitcom Family Ties — a role for which he garnered three consecutive Emmy awards as Lead Actor in a Comedy Series. A few years later, he leveraged that break into international stardom when he was cast (as a replacement for actor Eric Stoltz) to play Marty McFly, the lead character in the hugely popular 1985 adventure-comedy film Back to the Future .
Despite continuing to attend work events, sources have now said that the disease has been getting a lot worse recently and that the star was seen struggling to get into a car outside Hollywood restaurant Craig's.