What is Class IV Laser Therapy?

Cold laser therapy, also known as low-level laser therapy (LLIT) or photobiomodulation therapy, is a medical treatment that uses low-intensity laser or light-emitting diode (LED) light to stimulate and promote healing in tissues. Unlike high-power lasers used in surgical procedures, cold lasers emit low levels of light energy, which do not generate heat and are thus considered "cold."

Class IV laser utilize lasers with higher power output, penetrates deeper into the tissues, reaching muscles, tendons, and even deeper structures, and generates heat as it penetrates deeper into tissues, leading to a thermal effect. It is used for conditions requiring deeper penetration such as deep tissue injuries, arthritis, muscle strains, and more severe case of inflammation or pain.


Here's how Class IV laser therapy works:

  • Light Delivery: A handheld device or apparatus utilizing lasers in the range of watts at specific wavelengths, typically in the near-infrared specturm is applied directly to the skin over the area being treated. The light energy penetrates the skin and is absorbed by cells and tissues.
  • Cellular Effects: The absorbed light energy can stimulate various cellular processes. It is believed to enhance the production of adenosine triphosphate (ATP), which is essential for cell energy and function. This can help improve cellular metabolism and repair.
  • Pain and swelling Reduction: Class IV laser therapy is often used to manage pain and inflammation. It is thought to reduce pain by affecting nerve cells, reducing inflammation, and promoting the release of endorphins, which are natural painkillers.
  • Tissue Repair: The therapy may also promote tissue repair and regeneration by enhancing blood flow to the area, stimulating the production of collagen, and reducing inflammation.
  • Improved Range of Motion

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