Transcutaneous Electrical Nerve Stimulation Transcutaneous
electrical nerve stimulation (TENS) is a therapy that uses mild
electrical current to treat pain. Current is delivered through
small pieces of material that conduct electricity (electrodes).
These are placed on the skin near the source of pain. When the
current is delivered, some people experience less pain. This may
be because electricity from the electrodes stimulates the nerves
in an affected area and sends signals to the brain that
"scramble" normal pain signals. Another theory is that the
electrical stimulation of the nerve may help the body to produce
natural painkillers called endorphins, which may block the
perception of pain. eMedicineHealth Medical Reference from
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