Peptic Ulcer


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Definition

A peptic ulcer is a defect in the lining of the stomach or the first part of the small intestine, an area called the duodenum.

A peptic ulcer in the stomach is called a gastric ulcer. An ulcer in the duodenum is called a duodenal ulcer.

See also:

Stomach ulcer
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Stomach ulcer


Alternative Names

Ulcer - peptic; Ulcer - duodenal; Ulcer - gastric; Duodenal ulcer; Gastric ulcer; Dyspepsia - ulcers


Causes, incidence, and risk factors

Normally, the lining of the stomach and small intestines is protected against the irritating acids produced in your stomach. If this protective lining stops working correctly and the lining breaks down, it results in inflammation (gastritis) or an ulcer.

Most ulcers occur in the first layer of the inner lining. A hole that goes all the way through the stomach or duodenum is called a perforation. A perforation is a medical emergency.

The most common cause of such damage is infection of the stomach by bacteria called Helicobacter pylori (H.pylori). Most people with peptic ulcers have these bacteria living in their gastrointestinal (GI) tract. Yet, many people who have these bacteria in their stomach do not develop an ulcer.

The following also raise your risk for peptic ulcers:

  • Drinking too much alcohol
  • Regular use of aspirin, ibuprofen, naproxen, or other nonsteroidal anti-inflammatory drugs (NSAIDs). Taking aspirin or NSAIDs once in a while is safe for most people.
  • Smoking cigarettes or chewing tobacco
  • Being very ill, such as being on a breathing machine
  • Having radiation treatments

A rare condition called Zollinger-Ellison syndrome causes stomach and duodenal ulcers. Persons with this disease have a tumor in the pancreas. This tumor releases high levels of a hormone that increases stomach acid.

Many people believe that stress causes ulcers. It is not clear if this is true, at least for everyday stress at home.


References

Chan FKL, Lau JYW. Peptic ulcer disease. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2010:chap 53.

Chey WD, Wong BC. American College of Gastroenterology guideline on the management of Helicobacter pylori infection. Am J Gastroenterol. Aug 2007;102:1808-1825.

Lanza FL, Chan FK, Quigley EM; Practice Parameters Committee of the American College of Gastroenterology. Guidelines for prevention of NSAID-related ulcer complications. Am J Gastroenterol. 2009;104:728-738.

McColl KEL. Helicobacter pylori infection. NEJM. 2010;362:1597-1604.


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Review Date: 8/11/2011
Reviewed By: 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.
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Last Updated 10/4/2011
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