Anatomical positioning		Etiological classification	Common diseases
Local organ disease	Abdomin-al cavity	Inflammation	Gastritis, enteritis, pancreatitis, hemorrhagic necrotizing enteritis, cholecystitis, suppurative obstructive cholecystitis, urinary tract infection, etc.
		Organ rupture	Liver or splenic rupture, perforation ulcer, etc.
		Cavity organ obstruction	Intestinal obstruction, biliary calculi, biliary ascariasis, renal ureteral calculi obstruction, etc.
		Reversal of organs	Volvulus, mesenteric or omentum torsion, etc.
		Intraperitoneal vascular lesions	Mesenteric artery, splenic, renal embolism, abdominal aortic dissection aneurysm, etc.
	Napes	Inflammation or nerves	Abdominal wall contusion, abscess and herpes zoster, etc.
Adjacent organ diseases		Spine, heart, and lung diseases	Angina pectoris, myocardial infarction, acute pericarditis, pneumonia, pulmonary infarction, pleurisy, hiatal hernia, thoracic tuberculosis or tumor, etc.
Systemic diseases			Abdominal Henoch-Schonlein purpura, abdominal epilepsy, hematoporphyria, erythematosus, poisoning, etc.
Mental disorders			Abdominal neurosis.
Gynecology			Ectopic pregnancy and ovarian rupture, ovarian cyst torsion, pelvic inflammation, ovarian hemorrhage, etc.