Cold lasers relieve pain by targeting which sites?

• A. Acupuncture points
• B. Trigger points
• C. Nerves
• D. All of the above

Answer: (D)

Cold lasers relieve pain through photobiomodulation, a non-thermal effect where light energy modulates cellular function and signaling. Because this modulation can influence several components of the pain system, the therapy can be applied to different sites to achieve analgesia. Targeting acupuncture points can engage neurovascular and reflex pathways that influence pain perception. Treating trigger points helps reduce local muscle hypertonicity and nociceptive input from taut bands. Directly addressing nerves can alter nerve signaling and inflammatory activity contributing to pain. Because all of these sites can participate in pain modulation, applying cold laser energy to acupuncture points, trigger points, and nerves provides multiple avenues for relief.