Match each classic clinical description of a benign neonatal skin finding to its correct diagnosis.
- Erythematous macules with central yellow-white papules appearing on day 2 of life; smear of contents reveals numerous eosinophilsErythema toxicum neonatorum
- Vesiculopustules present at birth that rupture easily, leaving a hyperpigmented macule with a collarette of scale; smear reveals numerous neutrophilsTransient neonatal pustular melanosis
- Firm, pearly-white epidermoid cysts commonly found on the nose, chin, and cheeks of newbornsMilia
- Blue-gray, ill-defined macular hyperpigmentation typically located on the sacrum or buttocks of darker-skinned infantsCongenital dermal melanocytosis
Answer
The day-2 rash with eosinophils matches Erythema toxicum neonatorum. The rash present at birth with neutrophils matches Transient neonatal pustular melanosis. The pearly-white epidermoid cysts match Milia. The blue-gray sacral macular hyperpigmentation matches Congenital dermal melanocytosis.
Each clinical description aligns perfectly with a distinct, self-limiting neonatal skin finding. Recognizing these classic presentations is crucial for providing parental reassurance and avoiding unnecessary diagnostic testing for infectious etiologies.
Step-by-Step Solution
Key Concept
Differentiation of benign neonatal skin findings based on onset time, morphology, and cellular content