What Is a TENS Unit?
A TENS Unit is a small device that sends mild electrical impulses through adhesive electrodes placed on the skin. TENS stands for transcutaneous electrical nerve stimulation. The impulses can change how the nervous system processes pain signals and may support comfort during physical therapy. A TENS Unit does not directly repair injured tissue.
Quick Facts About TENS Unit
Category
Electrical stimulation device
Used for
Pain support during rehabilitation
Common confusion
Different from muscle-strengthening stimulation
Also called
TENS Machine, Transcutaneous Electrical Nerve Stimulation
Often discussed with
Physical Therapy
Key Takeaways About TENS Unit
- Electrodes deliver stimulation through the skin.
- Settings should match the treatment goal and body area.
- A TENS Unit is not the same as muscle-strengthening stimulation.
How TENS Unit Works
A TENS Unit sends low-level electrical impulses from a control device to electrodes placed on the skin. The electrodes conduct the impulses across a targeted area, while the user or clinician adjusts the stimulation pattern for comfort and treatment goals. The sensation may feel like tingling or gentle pulsing.
Related glossary terms: Therapeutic Ultrasound, Nerve Compression, Referred Pain.
TENS works through surface stimulation of nearby nerves. That stimulation can influence how pain signals travel and how the brain interprets those signals. In physical therapy, a TENS Unit may support comfort while a person performs movement training, stretching, or other therapeutic activity. Electrodes must sit on clean, intact skin and should be positioned according to the treatment plan. TENS does not replace movement-based rehabilitation or address the underlying source of an injury.
From the Advanced Injury Care Clinic team
When we use a TENS Unit in Physical Therapy, we check the treatment area, electrode placement, and the person’s response to stimulation. We coordinate electrical stimulation with active therapy when comfort affects movement or participation. Our team also reviews the device settings during the session and adjusts the approach when the response changes.
TENS Unit in Practice: A Real-World Example
A person with back discomfort may use a TENS Unit during a Physical Therapy session while completing guided mobility exercises. The stimulation may help the person tolerate movement practice more comfortably, while the exercises address mobility and function.
Related Services
Related Terms
Therapeutic Ultrasound
Therapeutic Ultrasound is a physical therapy modality that sends high-frequency sound waves into targeted soft tissue…
Nerve Compression
Nerve Compression is a condition in which pressure on a nerve disrupts normal nerve signaling. The…
Referred Pain
Referred Pain is discomfort felt in a location different from the tissue or structure causing it…
Range of Motion
Range of Motion is the amount and direction a joint can move through its available path…
Advanced Injury Care Clinic
Have Questions About TENS Unit?
Contact Advanced Injury Care Clinic for practical guidance on TENS Unit and related chiropractor work in Brentwood.