i am convinced that if i lives somewhere that snows I would get this. Even as it is in a mild australian winter my fingers turn a shade of mauve and get ice cold.
I think that your situation is more temporary than the disease.
I don't think this goes away, or is caused just by having cold hands.
I have this. Although, it's not as bad as all of these! It, usually, only shows up after I've gone back and restocked the walk-in cooler. I come out and my fingertips are white.
This is what my hand typically looks like if i'm outside. When it's really cold, the white bits can go a pale blue. <br /><center><img src="http://i4.photobucket.com/albums/y144/empusae/2011-02-10132444.jpg" /></center>
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