Ah, if i read correctly, i think i know the solution.
You arent experiencing heat, although whatever you are touching is extremely hot objects correct?
The extreme heat either destroys/temporarally your nerves shut down.
When this happens, the default feeling your brain say your feeling is cold.
although the timeframe for this is not that big, this may be what you are feeling.
(I sure hope my teacher was right when he was babbling off subject.. "and that was the civil wa-did you know that when you burn yourself badly".....