Gastroesophageal Reflux Disease (GERD)

Reviewed by Jeffrey B. King, MD Jeffrey B. King, MD

Gastroesophageal reflux is a backward flow or reflux of stomach contents into the esophagus. Everybody has some reflux. Abnormal amounts of gastroesophageal reflux can cause gastroesophageal reflux disease (GERD). This occurs when the sphincter of smooth muscle between the esophagus and the stomach does not function properly. This muscle band is called the lower esophageal sphincter.

A physician diagnoses GERD from a history of signs and symptoms. He or she may order tests such as a barium swallow, esophageal pH impedance probe study or endoscopy (EGD) to help diagnose this condition.

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