Acid reflux occurs when the sphincter muscle at the lower end of your esophagus relaxes at the wrong time, allowing stomach acid to back up into your esophagus this can cause heartburn and other signs and symptoms frequent or constant reflux can lead to gastroesophageal reflux disease (gerd). Acid reflux disease. Gastroesophageal reflux disease, commonly referred to as gerd or acid reflux, is a condition in which the liquid content of the stomach regurgitates (backs up or refluxes) into the esophagus the liquid can inflame and damage the lining (esophagitis) although visible signs of inflammation occur in a minority of patients.
acid reflux disease
