Here is My Question:
Why do my fingers prune in cold when I'm outside, like I have been in bathtub all day? Why do they sometimes turn white?
What you are describing is commonly referred to as Raynaud’s phenomenon. Usually it isn’t related to anything and is not serious, but sometimes can be a sign of autoimmunity (which is evaluated by a rheumatologist). This is not a secondary manifestation of MS.
A. Scott Nielsen MD MMSc
Neurologist and MS Specialist at Kaiser Permanente
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