Abigail-- i agree with your idea of pusuing nerve blocks. I saw a pain mgt dr recently for a lumbar sympathetic nerve block for my right leg/foot crps. While reviewing my case he said it was too late for it to be effective. Primarily they work while in the acute phase of crps, not when its become chronic. So no injections for me but definitely you are in the acute phase. I would urge you to continue downthis path in addition to LDN.