The circles on this photo show what was left of Michael's original skin color toward the end of his life. The Vitiligo had erased the pigment from practically all of his skin. I wish he'd spoken up and told everyone what was happening to him. It sure would have helped. Verification that he had Vitiligo can be found on his autopsy report. Vitiligo is listed as one of his medical conditions.
Try and tell me he didn't have vitiligo. I dare you.