My dad has being diagnosed with chronic enteritis. About seven months ago he had a terrible cramp and we took him to the doctor and he ended up cutting 30 cms of his intestine. At this point, he was complaining of so much pain and went to see many doctors, and got scans done. They said there were no tumors, no cancer signs or anything. The doctor said that his intestine got clogged and therefore, he had to cut the intestine.
The pain came back and they changed his diet once more with baby's food and ensure since they said they didn't want him to work his intestines for now until they find the problem. At the end, this is what they decided he has, but he can't have any normal food or life. The doctor said that his intestine gets swollen with anything he takes, drinks or eats, and as I said before, this is the conclusion he made, but I read your article and it doesn't really make much more sense since he never had diarrhea, vomiting or any of those symptoms.