Also called: Acid indigestion, Pyrosis
Almost everyone has heartburn sometimes. Heartburn is a painful burning feeling in your chest or throat. It happens when stomach acid backs up into your esophagus, the tube that carries food from your mouth to your stomach. If you have heartburn more than twice a week, you may have gastroesophageal reflux disease (GERD). With GERD, the muscles at the end of your esophagus do not close tightly enough. This allows contents of the stomach to back up, or reflux, into the esophagus and irritate it.
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