Photobiomodulation is a technique used in laser therapy. Particles penetrate the tissue and react with the mitochondrial cytochrome c complex. This contact sets in motion a molecular cascade that results in an increase in cell respiration as well as a reduction in pain and inflammation. Laser treatment, unlike pharmaceuticals, decreases pain without causing unpleasant side effects.
It's also worth mentioning that patients claim long-term pain reduction. While the range of medications needed varies depending on the severity of the ailment, many people report durable alleviation after just a few sessions.