Kate Beckinsale attends Variety’s 2024 Power Of Women: Los Angeles event on October 24, 2024. (Photo Credit: Gregg DeGuire/WireImage)On Monday, August 10, Beckinsale shared a lengthy yet now-deleted post on her since-scrubbed Instagram account. “The second thing is, I have a condition, which is an autoimmune condition called mast cell activation syndrome, and there’s another one called mast cell disease, and there’s mastocytosis,” she detailed. In August 2026, Kate Beckinsale purged her Instagram and replaced her profile image with an odd, if defiant, graphic. (Image Credit: Instagram)Later, Kate Beckinsale was provoked by another commenter into saying that she would “delete everything except for the books I recommend.”