What is a stomach ulcer?

A stomach ulcer is a sore or erosion that develops on the lining of the stomach. Ulcers can also develop in the esophagus or a part of the small intestine called the duodenum. This can occur for several reasons. Some of the most common include frequent use of anti-inflammatory medications or infection with a bacterium called H. pylori.
Roshini C. Rajapaksa, MD

An ulcer is an open sore in the lining of your stomach, small intestine or esophagus. In this video, gastroenterologist Roshini Raj, MD, explains the most common causes of ulcer formation, including H. pylori bacteria and OTC pain relievers. 

Continue Learning about Ulcers



Ulcers are caused by too much acid in the stomach, and the reasons for excess acid is usually a bacterial infection or prolonged use of NSAID painkillers like aspirin, ibuprofen, or naproxen. Smoking can also be a culprit. Ulcers ...

cause pain, most often when the stomach is empty or at night. The pain can in the chest, as low as the navel, or as high as the breastbone. Modern treatment is with medicine to kill bacterial infection and to block, suppress, or neutralize excess acid.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.