Any form of heart burn is an unpleasant experience, to say the least. The splashing up of stomach acid into the esophagus and throat can be quite painful and potentially dangerous. In extreme cases, where the esophagus is continually damaged by the reflux of stomach fluids, a condition called Barrett's Esophagus can develop. This condition is a precursor to esophageal cancer.
Barrett's Esophagus occurs when chronic reflux or esophagitis is not controlled. Through constant inflammation and damage, the normal cells that line the esophagus called squamous cells turn into specialized columnar cells. Columnar cells are not normally found in human beings and can become cancerous.