A duodenal ulcer is a type of peptic ulcer that can appear in the duodenum. The duodenum is the upper part of the small intestine that’s connected directly to the stomach where it empties into the ...

Peptic ulcers are sores in the lining of the stomach, lower esophagus, or small intestine caused by inflammation from the bacteria Helicobacter pylori (H. pylori) and stomach acid erosion. In April ...

Francisco J. Rivera Rosario is a science communications editor experienced in developing all types of science content including, scientific journal articles, infographics, medical educational videos, ...