Sounds like difficult child has a boil. The hot compress suggestions are good, and do them often.
Now I know most people avoid popping the things. But husband and easy child tend to get these, and I've popped/drained more than my fair share. (gross) But to pop one instead of going the more expensive lancing route you have to be careful. You have to be certain it has come completely to a head. It will be painful, but you also have to make sure you get all the gross stuff out. If you don't it will just come back. Make sure hands and boil are well scrubbed, and use perioxide to cleanse the boil after popping. After I've managed to drain one I'll put antibiotic ointment on it and a bandaide to speed up healing.
I'd go broke if I got husband's lanced every time he had one.
Hope difficult child's luck turns around.
hugs
