"In my case, what was it that made me skip down the hallway to the kitchen thinking I was fine when I'd be in a wheelchair six months earlier? It's because I had certain optimistic expectations of myself, and I'd had results to bear out those expectations, but I'd had failures too. And I hadn't given the failures equal weight," he explained.
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Fox went public about his Parkinson's disease in 1998 after being diagnosed with the condition in 1991.
He remains committed to his Michael J. Fox Foundation, which has raised $800 million for Parkinson's disease research thus far.
"Cruel Intentions" star Selma Blair credited Fox with giving her hope in an interview with "Good Morning America" this week. She said she spoke to the actor after being diagnosed with multiple sclerosis in 2018.
"Ever since my son was born I was in an MS flare-up and didn't know, and I was giving it everything to seem normal," the actress said.
"I was ashamed and I was doing the best I could ... so when I got the diagnosis, I cried with some relief."
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