I have a bit of a weird allergy. Im allergic to heat. If I overheat I start itching. And not the regular itching, the "I want to pell my skin off" kind of itch. If I stay hot my skin starts breaking out in hives, as the itching gets worse. I've read I can even go into anaphylactic shock if I don't cool down, though I've never had that happen. I've alwys had to be perpetually underdressed, but spring pollen makes it so much worse. I can't spend fifteen seconds in the sun without itching. Very hard to go outside.