"Knocked out my vision, knocked out my hearing, knocked out like all my equilibrium. It took me like a year to like build it all back up," Kutcher told adventurer and presenter Bear Grylls as they hiked through brambles and trees.
"You don't really appreciate it until it's gone, until you go, 'I don't know if I'm ever gonna be able to see again. I don't know if I'm gonna be able to hear again, I don't know if I'm going to be able to walk again," Kutcher said. "I'm lucky to be alive.
Complications from vasculitis took the life of actor-director Harold Ramis in 2014, Ramis' agents said. Ramis, who directed "Caddyshack," "National Lampoon's Vacation" and "Groundhog Day," and costarred in "Ghostbusters" and "Stripes," died at 69, four years after contracting the condition
Vasculitis occurs when the body's immune system attacks veins, arteries and small capillaries. The resulting inflammation narrows those blood vessels and restricts the flow of blood or even cuts blood flow off entirely,