Just decided to see a doctor about this very thing. Started off with pins and needles a few months ago in fingers and toes. Now weakness and pain after use in forearms and hands and numbness on sides of both big toes.
I am having very similar symptoms with a negative RA and lupus test as well, and have just started getting the numbness/tingling in my toes (only it's my right three little toes). I was prescribed vicodin and ibuprofen for the pain, but all they do is make it a little more bearable.
In all of the research I've done, Lupus seems like the closest fit, but no doctor seems able to help me and give me SOME kind of diagnosis. I'm beginning to feel like they think it's all in my head, but these aches and pains in my joints and some muscles tell me differently. I hope we get our answers soon.