Measles IgM can usually be detectable after the first 3 days of the exanthem. In roseola, after an incubation period of 5–15 days, infected children develop high fevers that last 3–5 days.

Pediatr Infect Dis J. 2008;27(6):551-552. Eczema, also known as atopic dermatitis, is a chronic skin condition which affects 15-20% of the population in developed countries including the United ...