Transient neonatal pustular melanosis.

Newborn infants were observed with vesicopustular and pigmented macular skin lesions, which occurred more commonly in black and mature infants and which were distinct clinically and histopathologically from erythema toxicum. Histopathology of skin biopsies of the vesicopustules is characterized by polymorphonuclear infiltration. The lesions often present as, or evolve into, a pigmented macule and persist from three weeks to three months. There are no associated systemic symptoms.