Stomach contents and acid are prevented from going back up the food tube (esophagus) by a valve called the gastroesophageal sphincter. When the valve does not close properly stomach contents can go up as far s the back of the mouth. Various foods and medications relax this valve allowing this to...
You may want to undertake a 3 month course of core strengthening exercises using a Pilates type regimen. If this fails I would consider consultation with 3 different plastic surgeons to discover your candidacy for a tummy tuck.
I assume you mean a stomach ulcer and not a skin ulcer. There is no known causation in the fo rmer and the latter may be due to decreased sensation in the lower abdomen.