I never meant to imply that the one and only thing that explains all symptoms of IBS is rectal hypersensitivity.It is only present in something like 70% of IBSers; however, it does explain a few symptoms some people describe and wonder why the heck these things happen to them.Having done specific testing for rectal hypersensitivity (part of a clinical trial I was in) I came to understand how it explained a few of my symptoms. It certainly wasn' t the one and only thing going on with me (as I do agree there is stuff going on in other parts of the colon) but it does explain the "pain that goes away when you fart or have a BM" which is a common enough symptom and specific enough for IBS it is used diagnostically because it does help to find the rectally hypersensitive. It also explains the "my stool consistency is more normal but I still go a lot with smaller BMs than I had when I went once a day before IBS."Doesn't explain pain from increased colon activity, whole colon tenderness, bloating, trapped gas, diarrhea after meals, splenic flexure syndrome, etc., IMO.Hope that clears that up