What disease causes pain in the lower right abdomen?

Right lower abdominal pain may involve various diseases, mainly including: 1. Intestinal diseases: such as appendicitis, which typically presents as migratory right lower quadrant pain; acute or chronic enteritis may also cause right lower abdominal pain, accompanied by symptoms such as diarrhea and fever. 2. Hepatobiliary diseases: such as cholecystitis, which initially presents as colicky pain in the right upper quadrant, possibly accompanied by symptoms like nausea and vomiting; hepatitis may present with persistent dull pain. 3. Gynecological diseases: such as ovarian cysts and ectopic pregnancy, which can both cause dull or aching pain in the right lower abdomen. 4. Other diseases: such as right ureteral stones, cecal cancer, and intestinal intussusception, which may also lead to right lower abdominal pain.