The only temperature-based allergy I know of is cold urticaria and I’m unaware of medication for it, but word love to know if that’s not the case.
2 points
Yup, and it’s just regular antihistamines. I took seldane for a while until they took that off the market, then it was on to reactine. It was a bit of a slap in the face when the reactine became non-prescription, and therefore somehow not medically necessary according to my insurance provider.