TENS — Transcutaneous Electrical Nerve Stimulation
Transcutaneous electrical nerve stimulation (TENS) is a drug-free pain treatment. A small battery-powered device sends mild electrical pulses through self-adhesive pads on the skin near the painful area. The pulses are thought to interrupt pain signals and encourage the body's natural pain-relieving responses, helping to manage many types of acute and chronic pain.
Medically reviewed by the Florence Healthcare medical team · Last reviewed June 2026
Overview
TENS delivers small electrical pulses through electrode pads placed on the skin around a painful area. The settings — pulse strength, frequency and pattern — can be adjusted to a comfortable level that usually feels like a gentle tingling or massage. Two main mechanisms are described: at higher frequencies the pulses may 'close the gate' on pain signals travelling to the brain, while at lower frequencies they may encourage the release of the body's own pain-relieving chemicals, such as endorphins. TENS does not treat the cause of pain, but it can be a useful, drug-free part of managing it.
Within a pain-management service, TENS is one tool used alongside exercise, physiotherapy, medication and, where appropriate, injections, as part of a personalized plan. For patients travelling from abroad, our pain-management team assesses your pain, shows you correct pad placement and device settings during your visit, and explains how to continue treatment safely at home with your own unit. Our specialists can review your history and imaging remotely beforehand to confirm whether TENS fits within the right overall approach for you.
Who is a candidate?
- People with chronic musculoskeletal pain such as low back pain, neck pain or osteoarthritis
- Patients with nerve-related pain, including some forms of neuropathic pain
- Those wanting to reduce reliance on pain medication as part of a wider plan
- People with acute pain, including some post-operative and labour pain, where suitable
- Patients who prefer a non-invasive, self-managed option they can use at home
- Those whose pain has been assessed by a specialist to confirm TENS is appropriate and safe for them
What happens
- 1
Pain assessment
A pain-management specialist evaluates your pain, reviews your history and imaging, and decides whether TENS is appropriate as part of your overall treatment plan.
- 2
Pad placement and settings
Self-adhesive electrode pads are positioned on the skin around the painful area, and the device is set to a comfortable intensity, frequency and pattern tailored to your pain.
- 3
During a session
You feel a gentle tingling or buzzing sensation, never painful. A typical session lasts around 20 to 30 minutes, and the intensity can be fine-tuned for comfort and effect.
- 4
Learning to self-manage
You are taught how to apply the pads safely, choose settings, and care for the skin and device, so you can use a personal TENS unit at home between or instead of clinic sessions.
- 5
Review and adjustment
Your response is reviewed and the approach adjusted, combining TENS with exercise, physiotherapy or other treatments. International patients receive guidance to continue safely after returning home.
Benefits
- Drug-free and non-invasive, with no needles, surgery or medication side effects
- Can be used at home and self-managed once you are shown how
- May reduce the need for, or dose of, pain medication for some people
- Adjustable settings let you tailor the sensation to a comfortable, effective level
- Can be used alongside physiotherapy, exercise and other pain treatments
- Portable and repeatable, allowing relief during everyday activities
Risks & considerations
- Skin irritation, redness or an allergic reaction where the pads are placed
- Relief is often temporary and varies between individuals; it does not work for everyone
- Not suitable over broken skin, the front of the neck, or directly over the eyes
- Should be used with caution, and only after medical advice, in pregnancy and in people with a pacemaker or other implanted electrical device
- Not advised for people with epilepsy or certain heart-rhythm conditions without specialist guidance
- TENS manages pain but does not treat its underlying cause, which still needs proper assessment
Conditions this treats
Where it is performed
This treatment is delivered by our Pain Management Department.
Learn more before you decide
Provider-reviewed guides on the related conditions, symptoms and tests in our Health Library.
TENS — Transcutaneous Electrical Nerve Stimulation — frequently asked questions
TENS sends mild electrical pulses through pads on the skin. At higher frequencies these may block pain signals from reaching the brain, and at lower frequencies they may trigger the release of the body's own pain-relieving chemicals. It eases pain but does not treat its cause.
No. TENS should never be painful. It produces a gentle tingling, buzzing or light massaging sensation, and the intensity is adjusted to a level that feels comfortable to you. If it becomes uncomfortable, the strength is simply turned down.
TENS is very safe for most people, but it is not suitable for everyone. It should be used with caution in pregnancy and avoided or supervised in people with a pacemaker or other implanted device, epilepsy or certain heart conditions. A specialist confirms it is right for you.
Yes. Once our team has assessed you and shown you correct pad placement and settings, TENS is well suited to self-management at home with a portable unit. We provide clear guidance so international patients can continue safely after returning home.
Yes. Our pain-management specialists can review your history and imaging remotely before you arrive to confirm whether TENS fits within the right overall plan for your pain, so your visit is focused and your treatment well targeted.
Cost depends on the assessment, the number of clinic sessions and whether a personal device is included. As TENS is usually part of a wider pain-management plan, we provide a transparent, personalized estimate covering your care before you commit.
Related treatments
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