Billy Connolly's Parkinson's disease was first spotted by one of his fans, the comedian has revealed.
Connolly said he was approached by a man in a hotel who had noticed that the way he was walking showed signs of the disease.
"He said 'Billy, I'm a big fan, and I don't want to depress you, but I'm a surgeon and your gait would suggest you have early onset Parkinson's - and he was right.', Connolly says on the ITV documentary Billy Connolly's Big Send Off, which will be broadcast on 7 May at 9pm.
Connolly said he "wasn't unduly worried" when he was diagnosed with prostate cancer on the same day as learning he had Parkinson's.
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