I can say that in the winter my hands turn purple, my rings swivel around my fingers. In the warm weather my hands swell, rings are tight, hands red and white blotches on my palms.(even after waking up in the a.m. with it.)
I was told years ago that I have reynaurds, that is a constriction problem with blood vessels in the hands.
I just wear my gloves in the winter and try to keep my hands up once in a while in the summer to reduce the swelling.
In regard to the previous comment, I think you mean Raynaud's Phenomenon. Here is a link:
http://www.niams.nih.gov/hi/topics/raynaud/ar125fs.htm