I hope this works out ok for you. The thought of losing ANY part of my body seems terrifying. Losing my pinky would seem like losing a life long buddy. I think we all take what we have for granted until we lose something.
Have you gone through all the treatments they describe here?
Raynaud's phenomenon - Wikipedia, the free encyclopedia The one about the asorbic acid looked kind of interesting. If it were me, I'd be trying every thing I could find no matter how stupid it seemed to keep my fingers.