does alergies cause hot face. I've experienced the same thing Vince. went to the VA hospital, as I'm a vet. doctor took blood from me did testing, found nothing. I also have major sleep problems. They gave me loratadine 10mg. i took it for 2 days, and my hot face seems to have gone.I would burn up at certain times but the hotness was always there. I seem to think when I go on aprahzolam which is xanax to sleep and then get off of it, the hot face flares up, but now that I think its an alergy and I'm taking loratadine, maybe I can continue to take xanax to sleep. which I didn't have to take this stuff, but I need my rest. try loratadine or even zantec? Hope this helps you?