Bret Michaels suffered a serious setback in his recovery from a brain hemorrhage, experiencing a small "warning stroke" that sent him to the hospital, where tests then revealed he also has a hole in his heart.

Both conditions are treatable and are not believed to be connected to his subarachnoid hemorrhage. But his doctor questioned whether Michaels can return as hoped to the May 23 finale of Celebrity Apprentice or to a concert on May 28.

"Without a doubt he is very determined to get healthy and make a 100 percent recovery. Medically speaking it is a fantastic attitude both mentally and physically for him to have," neurosurgeon Dr. Joseph Zabramski says on Michaels's Web site. "However, Bret's brain and body are not quite 100 percent yet, especially with the hole found in his heart."


Michaels's rep, Jann Elias, says the 47-year-old rocker is "in good spirits, great medical hands and is positive and hopeful that everything is going to be okay."

As for his condition Elias says, "He is up, walking, talking, continuing his daily rehab and very happy to be alive but he has made it clear he is sick and tired of being in the hospital and is ready to rock again."