I feel exactly the same way. Sunburnt and hot. My husband says I have a broken thermostat. Im trying and see if there is connection to the burning sensation and doing to much, pushing myself to hard that day. I can really feel the heat on my ears. My skin tend to get flushed but my ears turn bright red and hot to the touch. I assumed it was lupus related but wasnt sure. Before I was diagnosed though a friend asked me if I was taking anything with niacin in it. I wasn't but its good to know that can cause that hot sensation too.