A bout of pain in the lower abdomen may be a urinary system infection, and may also be related to digestive system diseases, reproductive system diseases and so on. 1. Urinary system infections: such as cystitis and other diseases, which can lead to frequent urination, urinary urgency, urinary pain, as well as bouts of pain in the abdomen and other symptoms. 2. Digestive system diseases: intestinal ulcers, chronic enteritis, intestinal cancer and other diseases can also lead to abdominal paroxysms, diarrhea and other symptoms. 3. Reproductive system diseases: male prostatitis, as well as female pelvic inflammatory disease, uterine fibroids and other diseases, can also lead to abdominal pain and other symptoms. The symptoms of abdominal pain should be diagnosed in a timely manner, and medical measures should be taken in accordance with the doctor’s instructions.