@OGIONIK,
Well, some ulcers are caused by a bacteria, H. pyloris. Stomach ulcers, I think, as opposed to duodenal ulcers, but don't trust me on that. Up until fairly recently, people suffered with them for years and years, and now those where H. pyloris is involved can be treated with a round of antibiotics. (or so I think)
I'm not saying stress is not involved, since it probably exacerbates acid secretion. What am I saying? Ask your doctor about that. (This is an m.d., right?)