What's wrong with stomachache?

Stomach pain after eating, may be gastric ulcer, gastritis, etc. Among them, gastric ulcer is characterized by rhythmic epigastric pain, usually 0.5-1 hour after eating, and fasting pain, no pain at night. Whether gastritis or gastric ulcer, treatment needs to first identify Helicobacter pylori infection. Helicobacter pylori needs to be examined by uricase test under gastroscope or biopsy under gastroscope, or carbon 13/14 breath test.