TENS Machine (Transcutaneous Electrical Nerve Stimulation) is used for chronic pain management where small electrical pulses are transmitted to the body, like little electric shocks. The machine transmits electrical impulses by way of special electrode pads through the skin. The placement of the TENS electrode pads is carefully selected to target the problematic areas which are causing pain. The theory is that the electrical impulses generated by the TENS machine interfere with and block pain messages sent to the brain.

TENS machines are widely used by chronic pain sufferers as a means of obtaining relief. The machine provides temporary pain relief but does not address nor correct the underlying reasons for the pain. It also has varying effectiveness for different people even with the same conditions.