Definition of Gastritis

Gastritis is an inflammation (irritation and swelling) of the lining of the stomach.

Causes, incidence, and risk factors

There are many causes of gastritis.

Signs and tests

Tests vary depending on the specific cause. An X-ray of the upper digestive tract, , or other tests may be advised.


Treatment depends on the specific cause. Some of the causes will disappear over time. Medications to neutralize stomach acid or decrease its production may be recommended.

Expectations (prognosis)

The outlook depends on the cause, but is usually good.


David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; George F Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 1/28/2009

Digestive system
Stomach and stomach lining

ADAM Medical Encyclopedia

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