‘Celebrity Rehab’ Star Shifty Shellshock — In a Coma

Former “Celebrity Rehab” star Shifty Shellshock is currently in a coma in an L.A. hospital — our sources has learned.

According to sources, the former Crazy Town singer has been in the ICU since last Thursday and is completely unresponsive. It”s unclear what put him there — but people close to him believe it was drug-related.

Shifty is scheduled to appear in court this week for a pre-trial hearing — after his February coke arrest. We”re told he was extremely anxious about the possibility of going to jail.