Belching


Definition

Belching is the act of bringing up air from the stomach. It produces a characteristic sound.


Alternative Names

Burping; Eructation; Gas - belching


Considerations

Belching is most often a normal process. The purpose of belching is to release air from the stomach. Every time you swallow, you also swallow air, along with fluid or food.

As the air builds up in the upper stomach, it causes stretching of the stomach that triggers the lower esophageal sphincter muscle to relax. This lets air escape up the esophagus and out the mouth.

Excessive or repeated belching may be caused by unconsciously swallowing air (aerophagia).

Depending on the cause, belching may change in duration and intensity. Symptoms such as nausea, dyspepsia, and heartburn may be relieved by belching.


Common Causes

  • Pressure caused by the unconscious swallowing of air
  • Gastroesophageal reflux disease (GERD)

References

Mayer EA.Functional Gastrointestinal Disorders: Irritable Bowel Syndrome, Dyspepsia, and Functional Chest Pain of Presumed Esophageal Origin. In: Goldman L, Schafer AI, eds.Cecil Medicine. 24th ed.Philadelphia,PA: Saunders Elsevier; 2011:chap 139.


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Review Date: 11/13/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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