Ashton Kutcher Reveals Vasculitis Diagnosis—Here Are the Signs

Famous actor Ashton Kutcher woke up with a migraine and vision problems in 2019, leading his equally famous actor wife and That '70s Show co-star, Mila Kunis, to urge him to see a doctor.

Eventually, doctors diagnosed Kutcher with vasculitis, a rare autoimmune condition that affects the blood vessels. A year of treatment left him in better shape, he told Esquire.

He recovered enough to run a marathon and appear in the adventure TV show Running Wild With Bear Grylls: The Challenge. "It was about testing my mettle," he said. It was on the show that his diagnosis was revealed — without his consent, Kutcher told Esquire.

Now, however, he is philosophical about it. "At the end of the day, I have to look at it and be like, 'All right, well, maybe it needed to come out,'" Kutcher said. "Maybe somebody will see this and go, 'Oh, this is helpful for me in some way knowing this'… hopefully that helps."

Kutcher's frankness raised awareness of the rare condition. Here's what you need to know about it.