Occasionally, when the weather turns cooler, I suffer from a bright red burning face and ears even though the rest of my body is cool to the touch. If I place a cool can of soda against my skin, the contrast is startling. I don't know what it is and what causes it, but it's very uncomfortable. I can feel my cheeks on fire. What is this? Is this common? Is it an allergic reaction? It doesn't happen consistently and I can't figure out if anything triggers it. Help!