What are the common diseases of the stomach?

Common diseases of the stomach mainly include: 1. Gastritis: Divided into chronic gastritis and acute gastritis. The former is often caused by Helicobacter pylori infection or不良 dietary habits, while the latter is commonly caused by food contamination or excessive alcohol consumption. 2. Gastric ulcer: Resulting from damage to the protective barrier of the gastric mucosa and continuous action of injurious factors. Typical symptoms include burning pain in the upper abdomen after meals, acid reflux, and nausea. 3. Gastric tumors: Such as gastric cancer, which may be related to genetic factors,不良 dietary habits, and other factors. Early detection and treatment are essential. 4. Others: These include gastric polyps, gastric calculi (stomach stones), and prolapse of gastric mucosa. These conditions may cause symptoms such as stomach pain and bleeding, and require diagnosis and treatment based on specific circumstances.