Over the last month I have been experiencing pain in my fingers when I hold something cold, even for a short amount of time. It starts off as pins and needles, then becomes an itchy painful sensation. My fingers then become red and then are warm to the touch - the itchy pain is still apparent then it gradually wears off. It used to be just when I hold something cold but yesterday I experienced it when I was walking my dog in the early morning when there was only a slight chill in the air and today they started to hurt when I was stood in front of a refrigerated counter at the store. I am otherwise active and healthy 42 year old. I am a little iron deficient but I take an iron supplement. I have a very slight heart murmur following mono when I was 19 years old that has never been problematic.