I get the pins and needles and ants crawling feeling also and absolutely hate it!! I have spoken to my PM Doctor about it and he said that it is a symptom of RSD and is sometimes caused by the nerves mis-firing. He told me that the best medication to try was Lyrica but I couldn't tolerate it that well and it didn't work for me - obviously, unfortunately you couldn't try Lyrica either because of the side effects you had .

I really hope you find something that helps you real soon and if you do, please keep us all updated. I am keeping you in my thoughts.