"I have voluntarily taken steps to get control of a prescription medication problem I had due to exhaustion. I have spent the past several weeks getting treatment for this problem and recuperating from my work and appearance schedule," the MTV star wrote. "I appreciate my fans support and love you guys."
Before seeking treatment, "Mike was in bad shape," a source told Us, adding that he doesn't keep in touch with his "Jersey Shore" co-stars. "When they are not filming, they really don't know what he is up to and don't talk to him at all."