3 year old with high fever accompanied by rash?

my son had his tonsils out 9 days ago… he did fine. The past few days he has had a fever accompanied with a rash. The rash only appears with the fever and then goes away as soon as the fever is gone and comes back with fever and so on. He is very lethargic. He wants to sleep a lot… and this is not common for him. He is usually VERY active. Not really sure what this is. Oh, and the rash is over his whole body, it starts on the face, it is pinkish-red, blotchy and has tiny bumps in the center of the rash. Anyone know what this could be… or experienced it?

first you must consult your pediatrician, but has the classic salmon rash and fever of Still’s disease. that is an autoimmune disease, or maybe a rheumatic fever , see if he has pain in the joins (wrist and ankles mainly), see if the fever strikes mainly at night (between 7 ans 10 pm)… those are my tips… when he present the rash… take pictures, you may visit the doctor and show them if your kid hasn’t at the moment… I wish you luck with it… normally this fevers can run for days… but go to the doctor…