Inventory of the characteristics of various types of common abdominal pain! 1, abdominal pain site General abdominal pain site is mostly the site of the lesion. Diffuse or variable pain is seen in acute diffuse peritonitis, mechanical intestinal obstruction, acute hemorrhagic necrotizing enterocolitis, hematoporphyria, lead poisoning, abdominal allergic purpura, etc. 2, the nature and extent of abdominal pain sudden onset of severe cut-like pain in the upper and middle abdomen, burning-like pain, mostly gastric and duodenal ulcer perforation; persistent vague pain in the upper and middle abdomen is considered chronic gastritis and gastric and duodenal ulcer; persistent dull pain or cut-like pain in the upper abdomen is increased in paroxysms mostly for acute pancreatitis; gallstone or urinary stones are often paroxysmal colic, quite intense, causing patients to toss and turn; paroxysmal sword The paroxysmal subacromial pain is typical of biliary ascariasis; persistent, widespread severe abdominal pain with abdominal wall muscle tension or plate-like ankylosis suggests acute diffuse peritonitis. Among them, hidden pain or dull pain is mostly visceral pain, mostly caused by changes in gastrointestinal tension or mild inflammation, and distension pain may be caused by parenchymal organ envelope stretching. Some mechanical intestinal obstruction is mostly related to abdominal surgery, and severe pain caused by violence in the abdomen and shock may be caused by rupture of the liver or spleen. 4.Post-prandial pain may be due to biliopancreatic disease, gastric tumor or dyspepsia. Periodic, rhythmic epigastric pain is seen in gastric and duodenal ulcers. 5.Relationship with body position Certain body positions can make abdominal pain increase or decrease, which may be a clue for diagnosis. For example, pain can be relieved by lying on the left side in patients with gastric mucosal prolapse, abdominal pain and vomiting can be relieved by knee-chest or prone position in patients with duodenal congestion, pain is obvious in supine position and relieved in anterior or prone position in patients with pancreatic body cancer, burning pain is obvious in anterior flexion of trunk and relieved in upright position in patients with reflux esophagitis.