Naughty Pox is a disease caught from touching a Naughty.
Naughty Pox starts off with yellow spots appearing all over the patient's body. Next, he/she starts to swell up, like a large, round ball, or a big, spherical balloon. Finally, he/she (unintentionally) gets fits of bouncing of a Naughty. This all happens very quickly within minutes. Less then an hour, they say.
The only known cure for Naughty Pox is to spend time in the presence of one of the Sit Downs. As the Sit Downs never get up, this can be tricky. A small Sit Down has to be found and brought to the patient. There, the Sit Down will work it's magic and restore them to normal.