Medical definition of acid reflux: gastroesophageal reflux gastroesophageal reflux acid reflux, which causes both occasional heartburn and ongoing gastroesophageal reflux disease (gerd), has become a major health concern as americans grow fatter. Acid reflux medical term. What causes acid reflux disease? one common cause of acid reflux disease is a stomach abnormality called a hiatal herniathis occurs when the upper part of the stomach and les move above the.
acid reflux medical term
