What are the symptoms of gastrointestinal bleeding caused by gastric ulcers?

When gastric ulcers lead to gastrointestinal bleeding, the main symptoms include: 1. **Hematemesis and melena**: Hematemesis may present as bright red blood or coffee-ground appearance, with the latter indicating that the blood has mixed with gastric acid. Melena indicates that blood has entered the intestine and undergone oxidation. 2. **Changes in facial appearance and physical condition**: Anemia caused by bleeding may lead to symptoms of shock such as pallor, cold sweats, cold extremities, and decreased blood pressure. 3. **Symptoms of anemia**: Long-term gastric bleeding may result in iron-deficiency anemia or megaloblastic anemia, manifesting as dizziness, fatigue, and palpitations. 4. **Increased pain**: During bleeding from a gastric ulcer, patients may experience intensified epigastric pain, especially after meals. These symptoms indicate a severe progression of gastric ulcer disease and prompt medical attention is necessary to avoid treatment delay.