I also get stabbing pains in the rectum but i dont have a rectal prolapse - i did have what was called mucosal prolapse which is very hard to diagnose (well in my case anyway).
Before diagnosis i had a pelvic floor repair(rectocele and cystocele - which is what they call it - this is when the walls of the vagina have become weak and allow the rectum and bladder respectively to bulge into the vaginal walls). A rectocele can cause problems with rectal function etc. but lots of women have them and no obvious bowel probs. The usual symptom is the feeling of obstruction as in my case.
Janie - the STARR op didnt help me as the diagnosis wansnt complete. The STARR got rid of the excess rectal tissue inside the rectum, but again, i still had issues with obstruction as they failed to diagnose a small piece of twisted sigmoid, plus slow transit constipation until after the STARR !!! In fact the volvulus wasnt confirmed until 2007. (after me screaming for more tests via another consultant). Resection caused colonic inertia.
Therefore i have concluded that there are more often than not many issues going on surrounding bowel problems, that is why we must get these doctors to look into every possible GI function.(wish i had done so looong ago - we are so vulnerable) it is no good fixing one problem if something else has been overlooked, as the result will be that we dont get better!.
1997: Diagnosed IBS
2003: Pelvic floor repair surgery
2006: STARR surgery for mucosal prolapse/Obstructive Defaecation Syndrome. Also diagnosed with slow transit
2007: No difference. Had MRI scan showing a partial volvulus
2007: Therefore surgeon recommended a sigmoid resection which resulted in immediate colonic inertia
2008: Now contemplating colectomy as I need to take up to 30 senna tablets daily for some kind of bowel movement (albeit not 'normal' or all at once). In discomfort/pain most days.
Scared to have TC as told I could become incontinent - but looking to have surgery before end of year hopefully