RT Book, Section A1 Weinberg, Samuel A1 Prose, Neil S. A1 Kristal, Leonard SR Print(0) ID 6987002 T1 Section 1. Benign Neonatal Dermatoses T2 Color Atlas of Pediatric Dermatology, 4e YR 2008 FD 2008 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-145543-5 LK accesspediatrics.mhmedical.com/content.aspx?aid=6987002 RD 2024/11/10 AB This very common and completely benign condition usually arises in the first 2 days of life. It is seen in about half of healthy newborns and occurs less frequently in preterm infants. The lesions are erythematous macules, within which papules and pustules may develop. The trunk is the most common site, but all other body surfaces, except for the palms and soles, may be involved. Occasionally' these lesions may occur in plaques. The eruption shown in Fig. 1-1 began 2 hours after delivery and involved the face and trunk. The eruption shown in Fig. 1-2 was unusual in that it was so widespread and vesiculopustular. Occasionally, this unimportant eruption must be differentiated from more serious infectious processes, such as neonatal herpes simplex. Tzanck smear of a pustule of erythema toxicum neonatorum will reveal numerous eosinophils but no multinucleated giant cells or bacteria. Occasionally, peripheral eosinophilia is also present. The cause of this condition is not known, and it resolves spontaneously within 10 days. No treatment is required.