E.O.
K.,
From the symptoms you are describing, it sounds like Roseola (a virus). My son went through the same thing ... high fever for a few days and then a rash all over his body. Go see the doctor, but don't worry about it, it should clear up in a day or two. Here's a link to webmd about roseola: http://www.webmd.com/skin-problems-and-treatments/tc/rose...
Ellie