This is a sore that forms in the lining of your digestive tract. It develops when stomach acid eats through the mucus layer that protects the walls of your digestive tract. A peptic ulcer can form in your stomach. It can also form in your esophagus, or in the upper part of your small intestine.
Causes and Risk Factors
Most peptic ulcers are caused by a common bacterium called H. pylori. It can infect you and can live in your digestive tract. In most people, an H. pylori infection does not cause problems. But in some, the bacteria attack the lining of the digestive tract. This allows acid to penetrate the walls. Peptic ulcers can also be caused by frequent use of pain relievers and other medications. Drinking alcohol and smoking can increase your risk for developing ulcers.