Transcutaneous Electrical Nerve Stimulation (TENS)
TENS may also provide some short-term relief from chronic pain. A TENS unit works by sending electrical impulses to the site of pain through electrodes on the surface of the skin. The pulse from the electrodes stimulates the nerves in the area of pain. Then, signals are sent to the brain that interferes with the normal pain perception. The device is usually used several times a day at a level set just for that person. The TENS unit is not painful.