Regurgitation occurs when food particles and liquid back up
unexpectedly from the stomach into the esophagus and mouth. Regurgitation is
caused by a weakness in the valve (lower esophageal sphincter) between the
esophagus and the stomach that normally prevents food from moving back up from
the stomach into the esophagus.
Regurgitation does not cause nausea or discomfort. Also,
regurgitation is different than vomiting, because nausea and the awareness of
soon becoming sick usually occur before vomiting. Regurgitation usually occurs
without warning when a person is lying down or bending over.
Kathleen Romito, MD - Family Medicine & Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology
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