A few days ago I noticed a small spot on my elbow which was painful if I rested it on the desk or table (I seem to do this rather a lot). It has got a lot worse over the weekend and is now a bit puffy, warm to the touch and has an angry head with a dark spot in the centre. I did manage to get some bright yellow gunk out of it earlier (applying hot water as per NHS advice) but it is still stinging and makes me gasp if it accidentally touches something. I'm going to try to get a GP appointment tomorrow.
I take this as karma for the slightly envious thoughts I've had whilst reading your descriptions!