Multiple sources connected to the family tell TMZ ... Travis' Tuesday hospitalization was a result of the condition -- which is an inflammation of the pancreas -- and includes symptoms like nausea, intense stomach pain and vomiting. We were not told precisely when Travis had the colonoscopy, but we're told it was recent.

As we reported, Kourtney Kardashian took Travis to West Hills hospital, near their home, early Tuesday. From there, he was taken by ambulance to Cedars-Sinai Medical Center in L.A. -- one of the best facilities in the country.

Travis' daughter, Alabama, posted and deleted a pic of her dad in the hospital while he rested in a hospital bed.

It was pretty evident Travis was in severe pain during his ordeal, tweeting "God save me" from his Twitter account.