Why are people traveling all the way to Nevada? According to their website, they have PRI-certified professionals all over the place.I think it is good to be skeptical of all "treatments" for anything. In our shoes I find research, research, and more research is best before deciding on anything.
It is far more than just PT they are doing. Here is the link to the Institute and all their programs.
And the founder:
There are some short videos near the bottom of the second links page explaining what PRI is.