Heartburn, also known as pyrosis, cardialgia or acid indigestion, is a burning sensation in the central chest or upper central abdomen. Heartburn is usually due to regurgitation of gastric acid (gastric reflux) into the esophagus. It is the major symptom of gastroesophageal reflux disease (GERD).

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Not who you're looking for? Others named heartburn: 1986 film by Mike Nichols · 1976 album by Kevin Coyne · 1983 novel by Nora Ephron