I don't think Nexium can actually cause erosion. But, your stomach acid will open that sore up real quick, mine comes back within a week of no PPI.
I am in same boat being Pylori negative and ulcer symptoms going on 3 months. Do you have anxiety? Or smoke? I am worried because every thing I read says Ulcer is caused by either Pylori or NSAID. Neither here.....How bad is the scope? Doc wants me to get one but am not feeling so hot about it. These darn PPI's make me ill but if I don't take them that duodenal burning comes back within a week. If PPI treat the burning pain it must be an ulcer I have right?