just a sugestion, but may be caused by a histamine reaction. I get the redness you talk about too, with or without heat, on my hands and feet, and on different parts of my body sometimes. I first thought it was rosacea also but now am certain its histamine, or histadelia, after research on the internet and after consulting my naturopath. Look it up! the best thing you can do is avoud certain foods for a while, ones containing high histamine, and make sure your taking good quality zinc and magnesium. These are the things I've been doing and have been fairly successful.