Originally Posted by mrsD

Super sensitivity to cold implies thyroid malfunction, or cryoglobulemia... which is an over production of some peptides from the bone marrow, which thicken the blood especially when cold. This is not very common, and can be tested for.

These thickened peptides dissolve and thin out in warmth.

I noticed my cold tolerance improved when I used steroids temporarily for my spinal pain attack/strain. I wonder now if I have some adrenal fatigue thing going on? It was down to 50 and mid 40's at night and in the morning many days this summer on vacation!