"American Idol" contestant Phillip Phillips was taken to a medical facility this morning for emergency treatment ... TMZ has learned -- and his future on the show is now in question.
Sources tell TMZ, Phillip -- the guy who always performs with a guitar on the show -- was complaining of intense pain in his abdomen ... and it seemed serious enough to sound the alarm.
The nature of the medical emergency is unclear -- but we're told people close to Phillip suspect it could be gallstones.
A source at the Georgia pawn shop where Phillip used to work tells TMZ, the singer was hospitalized back in January for a similar condition.