I have identical symtoms as Keggieman and luvmykitties39. While visiting my younger brother last month, don't ask me how we got on the subject but he suffers with the same symptoms.
It is not diarrhea and I have had a colonoscopy. I've had the symptoms for many years now and when I talked to my doctor he says to incorporate more fiber in my diet. It became worse when I did so, and my brother says the same. We both agreed that it seems as though we are alergic to fiber. We both also noticed the problem lightens up when we are eating a lot of fast food and little fiber.
One other thing, the first bowel movement of the day is perfect....all others require excessive "cleaning/wiping" as fecal matter continues to move down and ultimately irritates the rectal area. I have several bowel movements in a day (3-4).
The only way to eliminate the pain during the day after the 2nd bowel movement, is to insert the tip (about an inch) of an enema bottle (filled with cool water, using about half of the water)into the anus to clean out the residual feces. This immediately relieves the pain, but excuse the pun, it's a pain in the ---! Not to mention the inconvenience "everyday".
Please, if anyone has found a solution to this inconvenience, please reply.
Thanks