I was diagnosed with an underactive thyroid in october last year and i take 250mg of thyroxin daily, i am suffering alot with my body over heating , my arms go blood red and look like they have been severely sun burnt and the same happens to my chest and face, no matter what i do i cannot cool down even a cold shower wouldnt help me, i end up with sweat pouring down my face and it gets so uncomfortable and hurts, can u please tell me if this is linked to the under active thyroid please,