Biofeedback is a training technique in which people are trained to improve their health by using signals from their own bodies. You've used it if you have ever taken your temperature or stepped on a scale. The thermometer tells you whether you're running a fever, the scale whether you've gained weight. Both devices "feed back" information about your body's condition.

Armed with this information, you can take steps you've learned to improve the condition. The biofeedback practitioner acts as a coach, standing at the sidelines setting goals and limits on what to expect and giving hints on how to improve your performance.

If you think you might benefit from biofeedback training, you should discuss it with your physician or other health care professional, who may wish to conduct tests to make certain that your condition does not require conventional medical treatment first.