Can you tell me about what would cause loss of bowel control?

Depends: Loss of bowel control includes a lot of different patterns, from a little staining from a hemorrhoid to complete loss of bowel control due to sphincter trauma or nerve injury. A little staining now and then is common from prolapsing hemorrhoids or leaking through a small fistula. Major loss of control suggests trauma to the muscles (common after childbirth) or nerve dysfunction.