I am glad you found this site, I am new here too and I love it! Everyone is so helpful and kind. Sorry to hear about your problems though. Have you started a desensitization program with ot? That helped with some of my numbness and hypersensitivity. Also I have had 6 nerve blocks and they helped at first but then only helped for a couple hours. It is important if you get one to go to pt as soon as possible after (especially for workers comp) to get the most out of the injection and to improve your strength. I hadn't heard about the injections making it spread but mine did to the other arm, the doctors still don't believe it but I know that is what it is. Hope this finds you feeling better.
Jennelle