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 ...

Turn on the TENS unit and set it to the desired frequency and intensity. Usually, experts use a frequency between 50 hertz (Hz) to 150 Hz to treat pain.

Medicare may cover the rental or purchase costs of a TENS unit in some circumstances. Out-of-pocket costs may apply. Read more.