I can't offer much, except to say that my first colonoscopy in the hospital had the GI doc thinking Ulcerative Colitis, based on what he saw inside. Everything was inflamed, and there was ulceration. But, biopsies and stuff were inconclusive, so he he went to "unsure" on the exact disease. Had a flexible sigmoidoscopy later, and what he saw that time was a little different, looked a little more Crohn's like, but again the biopsies were inconclusive. He updated his diagnosis to "probably Crohn's," and it was later confirmed by the Prometheus test. Although it was never brought up, I do have a history of mouth ulcers...not bad ones, but I always wondered where they came from, and only after the Crohn's diagnosis and reading up on it did I realize that it might be connected. (And actually since starting Humira, I don't think I've had a single one.)