P.A.W.S.
For me...
It starts off with roasting inside. Your skin gets flushed, and your body literally starts throwing off heat. Then you start to sweat. A lot! I mean pools of sweat. Then, because you're soaked, you start to freeze. Uncontrollably shivering.
You shake so bad you can't even get a glass to your mouth, much less stand up. Your heart pounds and races. You can feel it n your extremities.
Nauseated, dry heaving into the toilet.
You just want to rip your skin off and run.
It's abject human misery.
There is no rhyme or reasoning to it. It just happens.
And, it just happened to me.
Lasted about 15min then, began to subside, thank God!
Wow! That sucked!