I woke up, /right/ at midnight. My skin was burning. Somewhat red and feeling - from the inside at least - VERY hot.
I took a quick, very cool, shower, which helped a bit. Woke up loree, who suggested - more importantly, knew where to find - benadryl. Took two, laid down on the couch - which was intensely uncomfortable - and finally managed to snooze for a few hours.
Woke up at 5, felt fine, went back to the bedroom, slept again until 7.