What are the causes of right-sided abdominal pain?

The causes of right-sided abdominal pain are relatively complex and may involve multiple diseases. They can be mainly categorized as follows: 1. Digestive system issues: Such conditions as gastritis, cholecystitis, gallstones, and appendicitis may cause pain in the right upper abdomen or the right middle and lower abdomen, often accompanied by other symptoms such as nausea, vomiting, and fever. 2. Urinary system issues: For example, ureteral stones, which typically present with sudden severe pain on the right side of the abdomen near the navel, possibly accompanied by hematuria (blood in the urine). 3. Reproductive system issues: In men, right abdominal pain may be caused by urethritis, cystitis, or prostatitis. In women, right-sided abdominal pain could result from gynecological conditions such as oophoritis or endometriosis. 4. Other diseases: Conditions such as biliary tract tumors, intestinal obstruction, and intussusception may also cause right-sided abdominal pain.