What type of disease is peptic ulcer disease?

Peptic ulcer disease is classified as a gastrointestinal disease because it involves the presence of ulcers in the stomach lining or the first part of the small intestine (duodenum). These ulcers are often caused by factors such as infection with Helicobacter pylori, prolonged use of nonsteroidal anti-inflammatory drugs (NSAIDs), and excessive alcohol consumption, which directly affect the gastrointestinal tract. Understanding peptic ulcer disease as a gastrointestinal condition helps to contextualize its pathophysiology, symptoms, and treatment options within the broader category of digestive system disorders.