Experts disagree on its effectiveness for lower back pain, but they consider TENS safe with a low risk of complications. Learn where to place TENS electrodes for this type of pain.

Medicare will cover the rental or purchase of a TENS unit, but only in certain situations.

Some people use a transcutaneous electrical nerve stimulation (TENS) unit to treat pain. This device works by sending electrical impulses through the skin. It may give people relief from the ...