Laser is most commonly used to reduce pain at trigger points by altering endogenous opioid production in the same way that morphine works to reduce pain, reducing the action potential in nerve fibres so that the pain signal is not transmitted and also reducing substance P production which leads to a reduction in pain, similar to TENs.
Laser is also used to aid in wound healing in cases of cuts, scrapes and mud fever in horses. As laser is applied to the tissues the mitochondria within each cell absorb the light energy, the light energy is then transformed into biochemical energy which leads to changes in cellular function. This leads to altered cell proliferation ensuring the wound closes effectively, stimulation of the immune response aiding in the reduction and prevention of infection.
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