[UnpossibleJim]

Well, I'm unfamiliar with Raynaud's phenomenon, but from the larger picture you've painted, this doesn't seem to be a temperature issue and quick fixes, while comforting, don't seem to be hitting the core of the issue. I hate to be "that guy" who gets on the gymkata preaching pulpit (and, yes, that's a very old movie reference), but I work in a computer lab and am generally cold, until I work out. Short, quick cardio in the morning (nothing too strenuous) and either more intense cardio with light weight lifting in the afternoon, or heavy weights and light cardio. I know this sounds like the meatheadiest of meathead posts, but it has really helped me out.... also helps me to keep focus a little better and work of a little frustration. Not all of it, but the sharp, acidic edges seem to fade a bit.