Michael J. Fox said that it is 'hard for' him to maintain a dark sense of humor while dealing with Parkinson's disease, but he does anyway. 'I gotta keep it intact,' he told PEOPLE at the Michael J. Fox Foundation's annual gala in New York City on Nov.

Back to the Future star Michael J Fox has admitted that his Parkinson’s condition makes it difficult for him to maintain his dark sense of humour. The 63-year-old actor, who was diagnosed with the disease in 1991, has maintained an active public presence including appearances at Glastonbury and awards shows, despite retiring from acting in 2020.

While filming "Doc Hollywood" in 1991, Michael J. Fox first noticed a tremor in his pinky finger. A visit to a neurologist brought a life-changing diagnosis: young-onset Parkinson’s disease (PD). At just 29 years old, Fox faced the daunting reality of a progressive neurological condition.