A to Z: Gastroesophageal Reflux Disease (GERD)

May also be called: Gastroesophageal Reflux; GER; GERD; Acid Reflux; Chronic Heartburn; Peptic Esophagitis; Reflux Esophagitis; Dyspepsia

Gastroesophageal (gas-tro-ih-sah-fuh-JEE-ul) reflux disease, or GERD, is a disorder that results from stomach acid moving backward from the stomach back up into the esophagus.

More to Know

Food travels down the esophagus to reach the stomach. The valve-like muscle where the esophagus joins the stomach is called the lower esophageal sphincter (LES). When the LES opens at the wrong time or does not close properly, it can allow stomach acid to move backward into the esophagus. This can lead to a burning sensation (heartburn) in the chest and throat and can eventually cause damage to the lining of the esophagus if it goes untreated.

Keep in Mind

Almost everyone gets heartburn from time to time. People with GERD have symptoms more often, but symptoms usually can be controlled or lessened with medications or diet and lifestyle changes.

All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.