Erythema toxicum neonatorum is a common finding of unknown etiology af
fecting healthy newborn children, particularly those born at term. It
is seen in the first days of life, but rarely at birth. Infants with i
t often have sterile papulopustules containing a predominance of eosin
ophils. It is important to distinguish from other cutaneous eruptions
of neonates, some of which are serious.