CT colonoscopy normal lower left abdominal pain may be irritable bowel syndrome, ureteral stones caused by female patients are also considered to be caused by ovarian cysts, need to go to the hospital for the cause to take medication, surgical treatment. 1. Irritable bowel syndrome: patients with irritable bowel syndrome will appear CT colonoscopy normal left lower abdomen has been the performance of pain, it is recommended that patients can follow the doctor’s instructions with scopolamine, scopolamine and other antispasmodic agents, as well as bifidobacteria, lactobacillus and other probiotics. 2. Ureteral stones: If the patient has ureteral stones in the lower part of the left ureter, there may be pain in the left lower abdomen, and CT colonoscopy is normal. Patients need to follow the doctor’s instructions with antispasmodic drugs such as atropine sulfate and belladonna tablets, as well as non-steroidal anti-inflammatory drugs such as diclofenac sodium and indomethacin. For patients with tubal stones more than 6mm in diameter, they need to be treated with extracorporeal shock wave lithotripsy, transureteroscopic lithotripsy and lithotripsy as prescribed by the doctor. 3. Ovarian cysts: patients with ovarian cysts will also appear CT colonoscopy normal left lower abdomen has been painful symptoms, for the emergence of endometrioid cysts of patients, you can follow the doctor’s instructions oral short-acting contraceptives, such as megestrol, levonorgestrel, and so on. Surgical treatments such as ovarian cyst debridement, ovariectomy of the affected side, and total hysterectomy may also be necessary for patients with ovarian cysts that are too large in size. Women CT colonoscopy normal left lower abdomen has been painful may also be the left side of the fallopian tube ectopic pregnancy caused, it is recommended that the patient should consult a doctor in a timely manner, the doctor will be for the cause of the cause of the selection of appropriate measures for treatment.