1. Gastric ulcers are caused by the weakening of defense factors and the relative increase in the strength of attack factors. Duodenal ulcers are caused by increased gastric acid secretion which is an attack factor

2. For gastric ulcers, the pain usually starts on an empty stomach or about 30 minutes after a meal, while duodenal ulcers The pain starts on an empty stomach, 2 to 3 hours after a meal, or at night. Duodenal ulcers are more common with fasting pain or night pain.

3. Gastric ulcers are more common with vomiting blood, while duodenal ulcers are more common with bloody stools.

In fact, there are essential differences between gastric ulcers and duodenal ulcers. They can be easily distinguished as long as they are distinguished carefully. There is no necessary connection between the two, so people with gastric ulcers may also suffer from duodenal ulcers. Therefore, patients should pay special attention to their diet and their health in daily life.