Ashley
I have had ulcers and even a perforated one that I almost died from when it got infected. There were no symptoms except a sore back.
It is said that stress doesn't cause ulcers but I believe it sets you up for bacteria to do it's job. Stress definitely caused my perforated ulcer. It took a lot of stress though.
Crohns and arthritis go together but I've never had it. I doubt I have or have had UC. Diarrhoea is something I might get once or twice a year. Going on two years now and that time it was food poisoning. I have read on IBS, IBD, IBC, and more related things and was only mildly surprised to see CBT used to treat them with some success. Studies are small and so far inconclusive. One study suggests that feed back is the cause and it is a known fact that the hypothalamus controls the organs through the pituitary gland. In theory stress could cause it to call for less mucus for protection or too much fluid retention. Even spasms and cramps. The next few years will prove or rule out.
Panic attacks won't kill you but long term stress certainly will.
I'm leaving this to others since I don't think I fit. Keep asking people, some times it takes a while for them to respond.
I hope they do though, it could be very good for them.
Davit