HOW DOES BIOFEEDBACK WORK?
Biofeedback is a technique whereby individuals train themselves to increase the blood supply to their extremities. Often, a wire is taped to the fingers. The wire is attached to a gauge or computer that indicates whether the finger temperature is going up or down. The person is then asked to imagine he or she is in a warm room, at the beach, etc. Relaxation tapes may be used. With practice, the person can learn to raise his or her finger (and overall body) temperature. After awhile, the response becomes automatic. This technique appears to work better for people with primary, as opposed to secondary, Raynaud’s.
