Michael J. Fox makes acting comeback after 5-year retirement from Hollywood despite Parkinson's battle

The "Back to the Future" star is set to return to the screen after five years in retirement with his most personal role yet in the upcoming season of "Shrinking." After battling Parkinson's disease since 1991, Fox admitted he lives life "on the edge of my energy."

"I want to be active at everything, keep working, keep my partnerships going, my good friends, and enjoy my time with my family," he added. "And it's all good; it's so much better than it could be."

Fox filmed a three-episode guest arc for the third season of "Shrinking," and his character suffers from Parkinson's disease.

"I said, 'You did a show about Parkinson's, and you didn't call me?' And he said, 'Oh, you want to do it?' And I said, 'I'd love to do it,'" Fox recalled.

"So he said, 'Let me think about it, see what I can do.' So he went to work on it and came up with this concept, it's really good."

"There's no timeline, there's no series of stages that you go through - not in the same way that you would, say, with prostate cancer. It's much more mysterious and enigmatic," he explained.

"There are not many people who have had Parkinson's for 35 years," Fox continued. "I'd like to just not wake up one day. That'd be really cool. I don't want it to be dramatic. I don't want to trip over furniture, smash my head."