This document discusses peptic ulcers, including their definition, causes, symptoms, diagnosis, and treatment. Peptic ulcers form in the stomach or duodenum when the protective mucus layer is damaged, allowing acid and pepsin to erode the lining. The primary cause is infection by H. pylori bacteria, though smoking, caffeine, alcohol, stress, and NSAIDs can also contribute. Common symptoms include belching, nausea, vomiting, and abdominal pain. Diagnosis involves endoscopy or blood tests. Treatment includes medications to reduce acid production, antibiotics to treat H. pylori, and sometimes surgery. Nursing care focuses on medication administration, diet, rest, monitoring for complications, education, and stress