@BortEdwards, might this actually be a peer?... HERE?? We shall see, looking forward.
I only took a cursory glance at a few abstracts (a synopsis, for the rest of you), and it appears there may have been some success with a spider bite. So, promising, but I'd wait a few months for more studies (there are undoubtedly more PhD candidates who's professors will happily pen their name to the work).
BTW, phychosomatic/placebo issues ARE a thing. In fact, the whole brain - body connection is not fully understood, but if it works (for a FEW individuals, good for them)