Travis Barker, Kourtney Kardashian share 'scary' details of his life-threatening pancreatiti

Travis Barker confirms to fans that he's doing "much better"

after being hospitalized in Los Angeles with a "life-threatening" case of pancreatitis.

The Blink-182 drummer shared Saturday night in an Instagram Story that he was “feeling great”

when he went in Monday for an endoscopy. “But after dinner,

I developed excruciating pain and have been hospitalized ever since.”