For women, pain in the abdomen with back pain may occur during menstruation. This condition is first considered to be dysmenorrhea, and often the symptoms will improve significantly with the use of drugs that activate blood stasis or relieve menstrual pain. Of course, in addition to dysmenorrhea, many diseases of the urinary system can also cause pain in the abdomen and lower back. A common one is acute pyelonephritis. Patients are often admitted to the hospital with the primary symptoms of frequent urination, urgent urination, painful urination, and even red urine. Of course, some urinary stones may also cause pain in the abdomen and lower back pain. This pain is often persistent and not easily relieved. Combined with clinical ultrasound, it can clearly detect hydronephrosis or ureteral dilatation. There are also some male specialist diseases, such as varicocele and prostatitis, which may also show similar symptoms. In addition, some degenerative pathologies of the lumbar region, such as lumbar disc herniation, should be considered. In addition to painful soreness and swelling in the lumbar region, this pain may radiate to the abdomen or lower extremities. Therefore, small abdominal pain with lumbar pain is a defense signal of the organism, which may be some external manifestations of the underlying disease, and should not be taken lightly if such symptoms occur for a long time. You should go to the hospital in time to identify the cause and receive appropriate treatment according to your condition.