Hi! Thank you for your question and welcome to our site.
Your wife may have experienced Raynaud's phenomenon/disease - this is an exaggerated response to cold or emotional stress not associated to any other disease. Due to these stimuli, blood vessels supplying the fingers, toes, or even the ears may vasoconstrict, thus decreasing the blood supply to these areas and causing a decrease in their oxygen supply.
This is different from Raynaud's syndrome, when the response is secondary to a host of possible conditions which include some connective tissue
, drug effects, and others. Thus, there will be a LOT of possible symptoms to check for. Some common ones may include exhaustion, weakness, difficulties with breathing, dizziness
and badly healing wounds. Only a careful medical examination along with some diagnostic tests can reveal whether your wife has Raynaud's disease or Raynaud's syndrome.
In the meantime, I would suggest that your wife avoid the triggers: wear thick gloves, socks and ear muffs/hats. Smoking
and caffeine may also worsen occurrence so it is also best to avoid these.
I hope I was able to answer your concerns! If you have any further questions, please do not hesitate to contact me.