Heartburn. Acid reflux, GERD. They’re different terms for the same type of condition – stomach acid used for digestion travels back up the esophagus, the “food pipe†that connects your throat to your stomach.
http://www.newswise.com/articles/radiofrequency-ablation-helps-patients-with-chronic-heartburn-treating-barrett-s-esophagus-prevents-precancerous-dysplasia