Rectal prolapse occurs when part of the large intestine's lowest section (rectum) slips outside the muscular opening at the end of the digestive tract (anus). The prolapsed rectum can cause fecal incontinence.
Rectal prolapse can sometimes be treated with stool softeners, suppositories and other medications. But surgery is usually needed to treat rectal prolapse.
Rectal prolapse care at Mayo Clinic