Match the following classic clinical descriptions of benign neonatal skin findings with their most likely diagnoses.
- Erythematous macules with central yellow-white papules on the trunk and extremities, showing prominent eosinophils on microscopic evaluation.Erythema toxicum neonatorum
- Firm, pearly-white papules on the nose and cheeks of a newborn, consisting of superficial epidermal keratin cysts.Milia
- Flat, blue-gray macular patches with poorly defined margins, typically found on the lumbosacral region of dark-skinned infants.Congenital dermal melanocytosis
- Vesiculopustular rash without surrounding erythema that quickly ruptures, leaving hyperpigmented macules and showing neutrophils on microscopy.Transient neonatal pustular melanosis
Answer
The correct matches are: Erythematous macules with eosinophils match Erythema toxicum neonatorum. Pearly-white keratin cysts match Milia. Blue-gray sacral macules match Congenital dermal melanocytosis. Vesiculopustules without erythema showing neutrophils match Transient neonatal pustular melanosis.
Each clinical description maps uniquely to a classic, benign neonatal skin condition. Recognizing these patterns is essential to avoid unnecessary testing or treatments and to provide appropriate reassurance to parents.
Step-by-Step Solution
Key Concept
Benign Neonatal Dermatological Findings