A TENS unit (Trans-cutaneous Electrical Nerve Stimulator) is a small device about the size of a deck of cards that can be used for managing sub acute or chronic pain. It works by "interfering" with pain signals to the brain, by flooding the pain-generating tissues with small, electrical currents that are thought to "compete" with the pain signals traveling to the brain, resulting in reduced perception of pain. It does not do anything to cure the inured site.
TENS units can be helpful by precluding the need for drugs that might be harmful to the user. It is also faster acting than ice and topical pain products.
In this video, I demonstrate how to operate a typical TENS unit, and strategies for placing the electrodes to achieve maximum benefit.
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