For example: The peristalic action of the bowel is what moves food along on its way to eventual elimination. If the bowel is adhered to the peritoneum (a stationary organ that has nerve endings), this will cause "a pulling or tugging" on the peritoneum; which in turn will cause irritation and inflamation of the peritoneum. The nerve supply of the peritoneum will then be constantly inflamed - causing chronic pain!
If adhesions are the culprit, surgery is not the answer; because currently, there aren't any surgeons, who can guarantee the results of an adhesiolysis procedure!! Adhesiolysis procedures are risky, tedious surgeries that most surgeons do not want to become involved with; so consequently, most surgeons will refuse to perform surgery for adhesions - unless the adhesion sufferer is actually suffering from a bowel obstruction.
Currently, the best that can be done for the pain of adhesions is Pain Management!!