Yes, biofeedback works for certain things. (I have personal experience here.) It works chiefly for two problems – pain control and relaxation/stress management. In fact, many insurance policies cover biofeedback for chronic pain management.
HOWEVER, make sure you have a certified practitioner that you feel comfortable with.
I know a young Bachur who was helped tremendously with his immotility (consstipation sort of) problems. In fact I myself am starting Pelvic Floor muscle rehab using biofeedback today.Am hoping my results will be at least as good as his, and will be freed from my prison and be more productive than posting in a coffee room.
If you still are looking and live in Brooklyn a good place I use
is South Shore Sports Therapy & Rehab a Part of Lutheran Medical center 718 9212945. My PT is Lauren a professional and very sensitive to my Tznius issues. I am starting to see results with my IBS issue