The document discusses peptic ulcers, including:
1. It provides an introduction defining peptic ulcers and their locations in the stomach or duodenum.
2. It discusses the history of discoveries around Helicobacter pylori being identified as a primary cause of peptic ulcers in the 1980s.
3. It describes common symptoms of peptic ulcers such as abdominal pain that is often relieved by food for duodenal ulcers but worsened by food for gastric ulcers.