"I'm not retired from acting," Fox said.
He clarified that any future decision to stop performing would stem entirely from managing his ongoing symptoms.
"I'm not retired from acting, but if I didn't act again, it would be for a very good reason," Fox said.
Fox reiterated that his primary guidance comes from how his health develops day by day.
"I let Parkinson's make decisions for me," Fox said.
The actor was privately diagnosed shortly after finishing work on Family Ties and kept the diagnosis secret during his initial two years on Spin City before going public in 1998, a transition he described as challenging for his family.
"[It was] hell," Fox said.
He recalled telling his wife, Tracy Pollan, that transparency was essential to help others facing similar circumstances.
"It was really hard on her — and it still is because it's always changing," Fox said.
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Fox resolved to address the condition openly to advocate for the wider Parkinson's community.
"But I said to her, 'I have to go all the way here. No half measures,'" Fox said.
He felt a responsibility to use his platform to raise awareness and support research initiatives.
"I started to understand what it was like for these people who didn't have the options or the choices I had, didn't have the connections and the reason to be optimistic.
… I needed to normalize it and just be that all the time. I said, 'I have to not hide this.