Acid reflux is a common condition that features a burning pain, known as heartburn, in the lower chest area it happens when stomach acid flows back up into the food pipe. Acid reflux. Gastroesophageal reflux (ger) happens when your stomach contents come back up into your esophagus causing heartburn (also called acid reflux) gastroesophageal reflux disease (gerd) is a long-lasting and more serious form of ger the most common symptom of gastroesophageal reflux disease (gerd) is.
acid reflux
