What Is TENS and How Does It Work?

Understanding TENS Therapy

TENS stands for Transcutaneous Electrical Nerve Stimulation. It is a drug-free method of pain relief that uses mild electrical impulses delivered through electrode pads placed on the skin.

TENS machines are used by many people to help manage different types of pain and can provide a convenient option for pain relief at home or while going about everyday activities.

How Does TENS Work?

A TENS machine sends small electrical impulses through electrodes placed on or near the area where pain is being experienced.

TENS is generally understood to help relieve pain in two main ways.

Pain Gate Mechanism

The electrical stimulation can help interfere with pain signals travelling to the brain and spinal cord. This is often described using the "pain gate" theory — stimulation of certain nerves may reduce the transmission of pain signals.

Natural Pain-Relieving Chemicals

Some TENS settings may also encourage the body's natural pain-relieving mechanisms, including the release of endorphins.

The sensation produced by TENS is usually experienced as a comfortable tingling or pulsing feeling. It should not normally be painful.

What Can TENS Be Used For?

TENS may provide temporary relief for a variety of painful conditions. Depending on the device and individual circumstances, people may use TENS as part of their pain-management approach for muscular and joint pain, back pain and other forms of acute or persistent pain.

Not every type of pain is suitable for self-treatment, and TENS does not treat the underlying cause of pain.

New, severe, unexplained or persistent pain should be assessed by an appropriate healthcare professional.

Where Are the Electrode Pads Placed?

Electrode placement depends on the area being treated and the particular TENS device being used.

Pads are generally positioned around or near the painful area according to the manufacturer's instructions. Correct placement can make a significant difference to the stimulation you experience.

Always follow the electrode-placement guidance supplied with your device and never place electrodes on areas identified as unsuitable in its instructions.

What Does TENS Feel Like?

When the intensity is gradually increased, you should normally feel a strong but comfortable tingling or pulsing sensation beneath and around the electrode pads.

The appropriate intensity varies from person to person. More intensity is not necessarily better — the aim is to achieve effective, comfortable stimulation.

If stimulation becomes uncomfortable or painful, reduce the intensity and check the electrode placement and condition of the pads.

Is TENS Drug-Free?

Yes. TENS uses electrical stimulation rather than medication to provide pain relief.

For some people, TENS can form part of a broader pain-management plan alongside other treatments. It should not be used as a reason to stop or alter prescribed medication without discussing this with an appropriate healthcare professional.

Is TENS Safe for Everyone?

TENS is not suitable for everyone or every situation.

Always read the contraindications, warnings and instructions supplied with your particular device before using it. If you have an implanted electronic medical device, are pregnant, have certain medical conditions, or are unsure whether TENS is appropriate for you, seek appropriate medical advice before use.

Choosing a TENS Machine

Different TENS machines offer different programs, controls and features. Some are designed for general pain relief, while others have programs or accessories intended for particular applications.

When choosing a device, consider where you intend to use it, how often you expect to use it and whether you would prefer preset programs or greater control over stimulation settings.

TensCare TENS Machines

TensCare offers a range of TENS devices designed to provide drug-free pain relief for different needs.

Whether you are looking for a straightforward device for occasional use or a more advanced TENS machine with multiple programs and settings, choosing a device suited to your individual requirements is important.

Always use your TENS machine according to its supplied instructions and seek professional advice if you are unsure whether TENS is suitable for your pain.