+Heartburn is a burning sensation, usually felt behind the breastbone, caused by [Stomach Acid](/wiki/Stomach_Acid) rising into the [Esophagus](/wiki/Esophagus). It is a common symptom of acid reflux, bringing discomfort.
+## See also
+- [GERD](/wiki/GERD)
+- [Indigestion](/wiki/Indigestion)
+- [Antacid](/wiki/Antacid)
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