Frequently Asked Questions

What is TENS used for?

TENS (transcutaneous electrical nerve stimulation) uses a low-frequency electrical current through the skin to help block pain signals and encourage the body’s own pain relief response. It’s used for a wide range of musculoskeletal and chronic pain, in both clinical and home settings.

What’s the difference between analogue and digital TENS units?

Analogue units offer simple manual control over intensity and frequency, suited to straightforward, single-purpose use. Digital units add built-in and custom programmes, timers and sometimes dual-channel operation, useful for practitioners treating a wider range of conditions.

What’s the difference between TENS and interferential therapy?

TENS uses a single current that stays near the surface of the skin, mainly for surface-level pain relief. Interferential therapy crosses two currents beneath the skin, reaching deeper tissue with less discomfort at the surface, better suited to deeper or larger areas.

How long can a TENS session last?

Most sessions run from 20 minutes up to several hours depending on the device and the condition being treated, and many home units are designed for extended wear throughout the day. Always follow the manufacturer’s guidance for the specific unit in use.

Is TENS safe to use at home without supervision?

Most over-the-counter TENS units are designed for safe home use following the manufacturer’s instructions, but anyone with a pacemaker or other implanted electronic device, or who is pregnant, should check with a healthcare professional first.

What accessories do I need to keep a TENS unit running?

Most units need replacement electrodes, conductive gel and occasionally a new lead wire, since electrodes lose stickiness and conductivity with repeated use. Buying spares in bulk is usually cheaper per unit than one-off replacements.

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