If you have RSD, this is considered an invasive procedure and not a great idea. It can cause a temp flare, or potentially exacerbate your condition. I've gone through them against the advice of my doc due to WC. I'd suggest bringing Lidoderm patches and have someone drive you home. The last time the tech cut mine short, because she felt it was cruel to continue... It was horrific. It has gotten more painful to endure the longer I've had RSD.

Some don't react as badly. If you truly need to rule out a different issue it might be worthwhile. Are you seeing a doc experienced with RSD? They generally advise against.