I have the opposite problem, namely feeling hot / overheating. This symptom only occurs at a certain time of day - usually around evening time (+- 10 hours after waking up). To describe it simply, around evening time I start feeling as if the room has suddenly become several degrees hotter, while in reality nothing has changed (I have checked with a room thermometer).
Finally, this symptom seems to be made much worse if I am in a crash / PEM. I remember, during a recent crash, feeling that way for the majority of the day and waking up feeling very hot and warmed up (interestingly without any signs of sweating at night).
As far as feeling cold is concerned, I do not notice such a feeling at normal room temperature, with the exception of my feet, those feel quite cold indeed. On the other hand if I am outside often times I can not tolerate the cold (5 C or below) and I do start shivering quite severely, while other people around me seem be doing just fine.
Finally, this symptom seems to be made much worse if I am in a crash / PEM. I remember, during a recent crash, feeling that way for the majority of the day and waking up feeling very hot and warmed up (interestingly without any signs of sweating at night).
As far as feeling cold is concerned, I do not notice such a feeling at normal room temperature, with the exception of my feet, those feel quite cold indeed. On the other hand if I am outside often times I can not tolerate the cold (5 C or below) and I do start shivering quite severely, while other people around me seem be doing just fine.