Bret Michaels' Grit: Performing Through Pain and Emergency Surgery

Bret Michaels revealed he underwent an unexpected surgery after experiencing “intense” pain from a kidney stone.

The Poison frontman, 63, shared an update from his hospital bed via Facebook on Wednesday, telling his followers that he’s learned “complete gratitude” for the hospital workers who helped care for him this week.

Michaels was taken to the hospital when the stone “would not pass” after seven days of waiting as the “pain became too much,” he shared.