What should you know about a wireless TENS unit?

TENS stands for transcutaneous electrical nerve stimulation. The electrodes sit on the skin near, but not directly over, the painful area, and the device produces a tingling sensation. Some people use it during activity or rehabilitation because the wireless design allows more freedom of movement. Relief is temporary for many users and differs by pain type, electrode placement, settings, and individual response. TENS does not identify or correct the cause of pain.

The control unit may be built into an electrode pod or operated through a paired device, depending on the model. Read the manufacturer’s instructions and have a physiotherapist show you placement when the painful area is difficult to reach.

Use intact, clean, dry skin and begin with a low intensity that feels strong but comfortable. Keep electrodes apart as directed, check the skin after use, and replace worn pads according to the device instructions. Do not place electrodes across the front of the neck, across the head, over the eyes, or across the chest. Do not use TENS while driving, bathing, sleeping, or operating equipment. Discuss use with a clinician if you have a pacemaker, implanted electrical device, reduced sensation, epilepsy, or are pregnant. The broader device overview is [TENS Unit](/technology/tens-unit/).

Stop the device for burning, painful shocks, persistent skin redness, dizziness, palpitations, or new weakness, and seek medical advice if symptoms do not settle. Get urgent help for chest pain, severe breathlessness, sudden weakness on one side, or a major new change in sensation. Persistent pain also deserves assessment rather than repeated increases in stimulation.

Ask whether TENS is suitable for your diagnosis, where electrodes should go, which settings to start with, how long each session should last, and what improvement would justify continuing it.