What should you know about a powerful TENS unit?

A TENS unit delivers electrical pulses through adhesive pads placed on the skin. The sensation may be tingling or tapping and is intended to change how pain signals are processed. It does not repair every cause of pain, and relief can vary between people. More intensity is not the goal: a painful current, irritated skin, or muscle twitching means the setting or placement needs review. The device should be considered part of a broader pain plan when appropriate.

Place pads only on clean, intact skin and follow the device instructions for spacing and session length. Start at a low setting and increase only to a comfortable level. Turn the unit off before moving pads, and remove them if burning, rash, or persistent redness develops. Do not use it while sleeping, bathing, or driving. Ask a clinician before use if you have an implanted electrical device, reduced sensation, a seizure disorder, or are pregnant. For a fuller explanation, see TENS Unit.

Stop and seek advice for skin burns, blistering, a spreading rash, unusual pain, dizziness, or symptoms that begin after changing settings. Do not place electrodes across the front of the neck, over the eyes, or across the chest unless a qualified professional has specifically instructed you. Seek urgent assessment for chest pain, fainting, severe breathing difficulty, or a new neurological symptom.

Is TENS suitable for the cause of my pain? Where exactly should the pads go? What intensity and session pattern should I try? How will I know whether to continue, change the plan, or stop?