where does rash start in the patients with roseola infantum, measles, rubella

roseola infantum(exanthem subitum)→starts on trunk and spreads to the face


measles→starts on the head/neck and spreads downward
rubella→starts on face and spreads centrifugally to involve trunk and extremities ☆(postauricular, occipital) lymphadenopathy

microbiology pediatrics UWorld