Elizabeth, My father has this too. A retired physician friend of his thinks it is Raynaud's, and it happens whenever he is cold. I don't think medical science yet knows what brings it on. When it comes on, he simply tries to warm up his hands and fingers until the natural color returns. Michael Frederic (son of Wayne, 70/69/67) _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com