Patients with lower abdominal distension and pain have the following common causes: a. Patients with intestinal obstruction can be caused by intestinal obstruction and obstructed excretion of intestinal contents, resulting in significant expansion of the intestinal canal in the lower abdomen, and the patients have symptoms of abdominal distension and pain. This is the first time that a person can be a part of the world, and it’s the first time that a person can be a part of the world. This is a great way to get rid of the pain and swelling in the lower abdomen.