What might be the cause of bowel adhesion?

Peritoneal adhesions: Adhesions in the abdominal/pelvic/peritoneal cavity result from inflammation. This can be from surgery or injury, from infection, inflammatory bowel disease, chemical irritation (such as blood, )and from foreign material. They form within 48 hours of whatever is the immediate cause. Adhesions from infection or chronic disease can form as long as inflammation is ongoing.

Several: Surgery and inflammation are the usual causes of bowel adhesions. While fewer adhesions form after minimal access (laparoscopic) surgery, some still do form. Inflammatory causes of adhesions include diverticulitis, pelvic inflammatory disease, inflammation of the gall bladder.