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TENS therapy, or Transcutaneous Electrical Nerve Stimulation therapy, involves the use of a device that produces low-voltage electrical currents to alleviate pain. This method works by sending tiny electrical impulses through the skin, which can interfere with the transmission of pain signals to the brain. The low-voltage currents can also stimulate the release of endorphins, which are natural pain-relieving chemicals in the body. As a non-invasive treatment, TENS is often utilized for various types of pain, including chronic pain, and is a popular option in physical therapy settings.

In contrast to other methods that involve high-voltage currents, acupuncture needles, or heat application, TENS focuses specifically on delivering low-voltage electrical stimulation to provide relief without invasive techniques or thermal effects.