Gastritis occurs when the lining of the stomach becomes inflamed or swollen.
Gastritis can last for only a short time (acute gastritis), or linger for months to years (chronic gastritis).
The most common causes of gastritis are:
Less common causes are:
Trauma or a severe, sudden illness such as major surgery, kidney failure, or being placed on a breathing machine may cause gastritis.
Many people with gastritis do not have any symptoms.
Symptoms you may notice are:
If gastritis is causing bleeding from the lining of the stomach, symptoms may include:
Tests that may be needed are:
Treatment depends on the specific cause. Some of the causes will disappear over time.
You may need to stop taking aspirin, ibuprofen, naproxen, or other medicines that may be causing gastritis, but only after you talk with your health care provider.
You may use other over-the-counter and prescription drugs that decrease the amount of acid in the stomach, such as:
Antacids may be used to treat chronic gastritis caused by infection with Helicobacter pylori bacteria.
The outlook depends on the cause, but is usually good.
Blood loss and increased risk of gastric cancer are possible complications.
Call for an appointment with your health care provider if you develop:
Avoid long-term use of irritants (such as aspirin, anti-inflammatory drugs, or alcohol).
Kuipers, E. Acid peptic disease. In: Goldman L, Ausiello D. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 141.
Lee EL, Feldman M. Gastritis and gastropathies. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 51.