Any medical treatment shoud show both better-than-placebo effect and a plausible mechanism for its action. This clearly lacks the latter, and probably the first too if you do proper research.
I'm a bit concerned with such rogue therapeutic applications really. Bluray lasers can be used to produce a sting sensation on the skin with very moderate power (100 mW focussed will do it easily for most people), but there is no data on efficacy, and even safety is debatable since such applications can cause minor burns quite easily.
I'd suggest never to put any body part in the way of a 100 mW+ green or bluray beam if it can be avoided. The realistic odds of that resulting in burns are there, but the odds of those burns turning into something nasty later on are usually small. Still, since the therapy is not effective, there should be no reason to take the risk, no matter how small it is.
The last thing we need is quacks using lasers as bogus treatment options - not a very good thing for the image of the laser industry that has so many real-world useful applications as it is!
