erythema neonatorum

er·y·the·ma tox·i·cum

an innocuous, self-limited rash of unknown cause that affects neonates; consists of papules, vesicles, and pustules on a pink base, and occurs on the trunk, face, and extremities. Synonym(s): erythema neonatorum, erythema toxicum neonatorum
A bright red vasomotor flush of no clinical significance that may transiently—up to 24 hours—cover the entire infant, mimicking inflammation

er·y·the·ma tox·i·cum

(er'i-thē'mă tok'si-kŭm) Flushing of the skin due to allergic reaction to some toxic substance.