I've had an odd symptom that I don't see discussed very much in the B12 deficiency community. There are times when I get very hot ears -- they read 100° F (37.7°C) or more with a laser thermometer. Initially, I would get two hot ears, lately it's been one ear or the other. I don't have a temperature otherwise.
The episodes can last briefly or go on for hours. I often experience it when my fatigue is worse, but it's not always connected. I get no other flushing, just the ears. Has anyone else experienced something like this? It seems unique from everything I've read.