Why is abdomen left inferior horn aching how to return a responsibility, ache extremely

Left lower abdominal pain if constipation, abdominal distension symptoms, may be related to intestinal obstruction, if accompanied by diarrhea symptoms, may be related to colitis, intestinal polyps, intestinal cancer. If there is abnormal urination may be related to urinary stones, tumors. Simple abdominal pain without other symptoms, may also be related to nerve, mental factors.