He needs to see a specialist. There are doctors, nurses and others here who can tell you much more.
Is it possible that he got into any poison ivy?
Maybe he is allergic to something?
Prayers
If the lesions are small, it sounds like a possibility of a scarletina rash, but he needs to be checked out.
First thing that jumped into my head when reading your post, was Rheumatic fever...has that been ruled out?
You could search this site:
http://kidshealth.org/parent/infections/bacterial_viral/scarlet_fever.html
Health/life BTTT for FReeper consideration.
Sounds similar to the first stages of chicken pox, before the actual lymph filled blisters appear. I had it as an adult. Chest rash, mild fever and lassitude. I consulted a supposed doctor who said I might have fleas in my bedding and suggested bug spray. I still think about that medical quack from time to time.
Sounds exactly like scarlet fever, exactly.
Find a better doctor, sheesh.
http://www.webmd.com/a-to-z-guides/understanding-scarlet-fever-basics
He needs antibiotics.
Prayers up for him.
Has he possibly been bitten by a vole? His symptoms sound like those of a child from church who was bitten on his farm. He had tularemia.
A friend of mine was just diagnosed with cellulitis. A small cut in the skin became infected with a staph germ.
. . . What causes cellulitis?
http://www.webmd.boots.com/skin-problems-and-treatments/guide/cellulitis
Cellulitis can be caused by many types of bacteria. The most common is staph (Staphylococcus aureus), followed by strep (Group A Streptococcus). A form of cellulitis caused by strep is called erysipelas; it is characterised by a spreading hot, bright red circumscribed area on the skin with a sharp raised border. Cellulitis from a dog or cat bite or scratch may be caused by the Pasturella multocida bacteria, which has a short incubation period of between four and 24 hours. . . .
Cystic fibrosis w/subsequent lung infection is possible. CF can make mucus and sweat acidic.
http://www.drweil.com/drw/u/ART03167/Scarlet-Fever.html
Get him on antibiotics now. Within 9 days of outset or you could be looking at very very serious conditions. find someone to treat him for scarlet fever.
Some of the things that cause itchy rash, fever and loss of appetite are Chickenpox, Scarlet Fever, Roseola, Lyme disease, Mononucleosis, hard to believe they haven’t diagnosed it though.
I hope you get an answer today and it’s treatable. Poor kid.
Has he been checked for a staph infection?
We have a 4 yo and 2 yo...they have had all sorts of stuff. Our daycare was shutdown by foot and mouth? disease? and also we just got over a 4 day fever virus that ended in slight rashes that went away. Roseola (sp) was mentioned. Hope this helps! Prayers sent.....but don’t worry, kids are pretty darn tough!
Scarlet Fever?
buy Sonne’s #7 clay and have him drink 1/2 T twice a day. It removes toxins and viruses.