Update on Ashton Kutcher's "rare" vasculitis episode

Three years ago, Kutcher experienced an autoimmune crisis.

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The autoimmune disease left Kutcher temporarily unable to walk, hear or see.

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Ashton Kutcher is moving on.

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On a recent episode of National Geographic's "Running Wild with Bear Grylls: The Challenge," Kutcher first disclosed his medical prognosis.

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Grylls commented on Kutcher's "strong and resilient" nature and said he is "lucky to be alive.”

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Kutcher was in good spirits Monday night as he and his wife, Mila Kunis,

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attended "Ping Pong 4 Purpose" at Dodger stadium.

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The charity event, hosted by Rob Lowe, is an annual event to help raise awareness for Clayton Kershaw's charity, Kershaw's Challenge.

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Ozzy Osbourne returns to the stage after 'life-altering' surgery

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