Upon arriving home (sent home early by my boss who sent everyone home early for Thanksgiving), it got really bad, so I turned out all the lights and tried napping.
Now I am up, my headache is mostly gone, and I think I'll go to Wafflefest.
I hope that's not a tactical error.
But what caused this malady? Right now the theory is that I didn't drink enough water when playing DDR last night. I must remember to stay hydrated.