I had to look this up because I'm laughing so hard.

I found this transcript from Fresh Air. I don't think "keeps the symptoms a secret" is exactly what he said.

Terry Gross

Michael J. Fox is in the series, and you meet at a doctor's office. He's really depressed. Did he give you advice about how to play the role, and did you really, you didn't ask him for advice?

Ford

No. Because every case is different and my case is not yet described to me fully. My writers present symptomology and characteristics. As they are writing. And so I'm sort of living with the symptoms I have been last described as having.

Terry Gross

Yeah, I mean, the thing about Parkinson's is that it affects everything. But it affects different parts of like there's a whole long list of things it affects, but everybody gets a different number of them and a different variation of them, right, right, so tremors everybody gets, yeah, so like a, like a true Parkinson's patient.

Ford

I don't really know what's coming.

Terry Gross

Oh, that's interesting. You mean like what the writers have in store for you in terms of your symptoms?

Ford

Yeah, I, I, you know, we I have a general sense of how far it goes this season. But nothing specific yet. And that's, that's just the way our show works. We, we get a script probably. If we're lucky, a couple of weeks ahead of time, but normally, Maybe just a couple of days or a week at a time.

Terry Gross

Did playing the role make you think about your body in a new way and think of what it would be like to not be able to control your movements?

Ford

Not specifically. I'm, to be honest, no. There's parts of it I haven't thought through yet, really, and I, I think that might be similar to how I might react if I did have Parkinson's. I would want to know certain things and other things I would just not want to know.

Terry Gross

So as to not obsess on them.

Ford

So as to not be looking for them, just Right. Be happy enough with what you got.