My son also has severe pain after bowel movements. He has a long history with diagnoses of Cyclic Vomiting Syndrome, which he definitely had, and Chron's which I always wonder if that ever was the issue or not. The pain has gotten better for some periods and then returned, most recently after a colonoscopy/endoscopy a week ago, where they "stretched" a Shatzi ring in his esophagus. The terrible pain after bowel movements has come back since then. Has anybody with this problem found any answers? This has been going on since he was a very young child. He has had bowel resections (where they always say they don't see any Chrons) and is on multiple meds for Cyclic Vomiting and Chrons. Any help would be most appreciated.