Upper abdominal pain may be a symptom of certain diseases, such as gastritis, gastric ulcer, duodenal ulcer, gallbladder stones, acute pancreatitis and so on. 1. Gastritis: the stomach is usually located in the upper left abdomen, if you suffer from gastritis, the gastric mucosa is stimulated by germs usually appear erosion and bleeding symptoms, thus appearing epigastric pain phenomenon. 2. Gastric ulcer: Helicobacter pylori infection or long-term use of aspirin and other causes of gastric mucosal defects, deep into the muscle layer, gastric acid corrosion can appear after the epigastric pain. 3. Gallbladder stones: the stones may be blocked in the jugular abdomen or neck of the gallbladder, the emptying of the gallbladder is blocked, and the pressure inside the gallbladder rises suddenly. In order to discharge the bile, the gallbladder strongly contracts and colic occurs, resulting in pain in the upper abdomen. 4. Acute pancreatitis: activation of pancreatic enzymes in the vesicles induces auto-digestion of the pancreatic parenchyma, leakage of pancreatic fluid, causing peritonitis, severe abdominal pain, mostly located in the left upper abdomen. If there is pain in the upper abdomen, it can also be seen in other causes, you should go to the hospital in a timely manner, to clarify the cause of the disease, and follow the doctor’s instructions for treatment.