Detroit PistonâÂÂs Charlie Villanueva tweeted afterward (screen grabs after the jump). Charlie Villanueva suffers from alopecia universalis, an autoimmune skin disease; the result is hair loss. Charlie Villanueva claims that during the game, Kevin Garnett called him a âÂÂcancer patient.â Darragh MacAnthony wants to know why Garnett would say such a thing...investigation needed.