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.

Michael J. Fox admitted it is hard to maintain even his dark sense of humor during his Parkinson's battle, but he refuses to give in, working on keeping it "in tact."

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.