Biofeedback is a relaxation method for chronic pain management. Electrodes are placed on your forehead. These sensors measure electrical activity related to body functions such as breathing, pulse rate and muscle contractions that may be due to tension. Feedback from the sensors may show whether or not you are successfully controlling your body functions. The idea is to allow you to learn how to consciously relax your own muscles. You can learn techniques such as imagery, concentration, or visualization to control your body. There have been no specific studies showing the effectiveness of biofeedback for the treatment of sinus pain or nasal congestion.