My son 5 years old was diagnosed with tonsillitis last week but suddenly started a rash yesterday on his stomach and back. fever has not broken despite antibiotics (orelox). im worried its scarlet fever. ?

Might be or not: A fraction of Strep A germs have the ability to produce a red rash,like a sandpaper textured sunburn.It has little importance in the antibiotic era since the germ is killed easily. Prior to antibiotics SF was a bad disease, today not so much. This med should kill the germ easily. If the fever persists in spite of rx it is either the wrong dose or not strep A. A re-check by his doc would be prudent