Reflux can be referred to by a number of different names including Gastroesophageal Reflux, Acid Indigestion, Acid Reflux, and Heartburn. Reflux occurs when acids in the stomach flow back into the tube (esophagus) that connects your stomach to your mouth. When this backwash happens the acid reflux causes irritation in the lining of the esophagus, often leading to inflammation of the esophagus. It is not uncommon for people to experience acid reflux on occasion. However, if you find that you are experiencing reflux that is mild at least twice a week, or moderate to severe reflux at least once a week, then you could be suffering from Gastroesophageal Reflux Disease (GERD).