Ulcers

A peptic ulcer is a sore that forms in the lining of the stomach or the beginning of the small intestines, called the duodenum. Ulcers are common, affecting an estimated 25 million Americans.

Contrary to popular belief, ulcers are not due to stress and diet. A bacterial infection brought on by the bacteria Helicobacter pylori (H. pylori) is the cause of the majority of all stomach ulcers. Prolonged use of nonsteroidal anti-inflammatory drugs (NSAIDs) or pain relievers such as aspirin, ibuprofen and naproxen sodium, which affect the stomach's ability to protect itself from acidic stomach juices, also may lead to ulcers.

At UCSF Medical Center experts treat people suffering from ulcers with a number of medications.

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Reviewed by health care specialists at UCSF Medical Center.
Last updated February 14, 2008