Transcutaneous electrical nerve stimulation (TENS) is a noninvasive pain-relief technique. Recurrent low-voltage electrical signals are delivered via thin wires and adhesive pads (the electrodes) to the underlying muscles and tissues.

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These signals interfere with pain regulation. The frequency and intensity of these signals can be adjusted as necessary.

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It is important to note that TENS is not curative. This means that it will temporarily ease pain while being used. However, it will not be used to heal injuries.