I think the cold from MGUS or cryoglobulinemia is PAINFUL...like frostbite.

The cold from hypothyroid at least for me, is a deep cold, which leads me to making hot tea etc or soup.

PNers here typically cannot stand heat...and prefer cooler temps. We typically stick our feet out from under blankets etc.

When the heat sensing nerves are affected and over work, burning is often the result, and cooling off the area with Biofreeze or a cold pack helps.

The people with the increased viscosity of the blood however, seem to like warmer temperatures.

My feet will become uncomfortable at around 85 degrees.

PN is a mixed bag depending on your particular case. Over 100 types of PN you know!