What is a "TENS unit"?

What is a "TENS unit"?

Marc Darrow (Physical Medicine and Rehabilitation, Joint Rehabilitation Sports Medical Center, Inc. ) gives expert video advice on: When is spinal cord stimulation used?; How does TENS control pain? and more...

A TENS unit is a transcutaneous electrical nerve stimulator. It is a small device, much like a pager, and it can be placed anywhere on the body. You can carry it on a belt and there are electrodes that come off it that can be placed on an area of pain.