I have had severe abdominal pain for 5 years. The pain began shortly after a surgery, which required an incision slightly above the navel and travel straight down. The sharp pain wakes me up in the middle of the night, and travels from the navel down. The pain typically lasts for 3-4 hours and then is followed by diarrhea. I usually have body aches for the remainder of the day, and not much of an appetite. I have had many ultra sounds, and a colonoscopy. The results of all tests have been negative. My appendix was removed 3 years ago but the pain has not stopped. The doctors do not know what is causing this pain. Has anyone had similar symptoms? Does anyone have any suggestions, or remedies for treating the persistent problem?