So I got cleaned up and went to look for medical care. I figured if I couldn't sleep because of it, I oughta do whatever it took, right now. My doctor would take ten days to get in to see; Urgent Care wasn't open for two hours (how "urgent" are they prepared to be?); so I wound up at the local emergency room.
I got right in. The doctor said it was an under-the-skin infection and gave me some powerful antibiotics. We'll see if that takes care of it.
It's always something, you know?