Erythema toxicum neonatorum (ETN) is a harmless and common rash that affects newborns. It appears as a collection of small, yellowish bumps surrounded by inflamed skin. It can look similar to acne.

Erythema toxicum neonatorum is a common rash of unknown etiology affecting healthy newborn infants. In this study, we postulated that the rash reflects a response to microbial colonization of the skin ...

The pathogenesis of erythema toxicum neonatorum is not well understood but may arise secondary to skin contact with meconium. Some studies have suggested that an abnormal immunologic reaction to ...