Honey, I gotta say that I have never come across this "overheated" think (and I am a 56-year old woman with some experience... ). Has that ever happened before? This, along with the bump on the head and the dizziness while driving are worrisome. He really needs the physical (and I agree with NOP to blow off the Testosterone thing-- the chances of it being relevant are inversely proportional to the distress the discussion will cause). But this other stuff needs to be checked out.