Acid reflux occurs when stomach contents moves backward into the esophagus. It’s also called acid regurgitation or gastroesophageal reflux (GER). Acid reflux is a common digestive condition. According to the American College of Gastroenterology (ACG), more than 60 million Americans experience acid reflux at least once a month. More than 15 million Americans experience it every day.
Acid reflux usually causes a burning sensation in the chest. The sensation radiates up from the stomach to the mid-chest or throat. This is also known as heartburn.