sometimes that can happen if you are low on b vitamins like b 12 and niacin. so before you see your doctor you might want to consider picking up a good sublingual b-complex supplement (much more absorbable than pills) at the pharmacy or grocery store and try that for a few days to see if it helps. they aren't expensive and it won't hurt you if that's not the problem.
why do i have a low tolerance to cold weather suddenly? . i'm in my 20s and have lived in northern us climates my whole life. i don't recall the winter months ever being particularly intolerable. but over the last 3 years below freezing temps have become agonizing. that's not all- i'm finding under 70f or cloudy days jacket weather suddenly and i keep my house at 88f. triple digit temps don't feel like anything and i can even wear a jacket if necessary for my outfit. it's like i've become borderline reptilian. what could be causing this shift?