Which description best matches erythema toxicum neonatorum?

• A. A benign skin rash that persists for several days and resolves spontaneously, with erythematous macules containing central yellow or white papules
• B. A blotchy purpuric rash related to birth trauma
• C. A pustular eruption on the palms and soles only
• D. A transient necrotic lesion at the umbilicus

Answer: (A)

Erythema toxicum neonatorum is a common, benign newborn eruption. The key feature is erythematous macules with central yellow‑white pustules on a healthy infant, typically appearing within the first 1–3 days after birth and resolving on its own within a few days to a couple of weeks. There is no fever or systemic illness, and no treatment is needed beyond reassuring the family.

This description fits ETN because it emphasizes a self-limited rash with central pustules on an erythematous background. The other descriptions don’t match ETN: a blotchy purpuric rash would raise concerns for a hemorrhagic process or birth trauma rather than ETN; a pustular eruption limited to the palms and soles is not characteristic of ETN, which commonly involves the trunk and proximal limbs; and a transient necrotic lesion at the umbilicus points to different conditions such as umbilical infections or necrotizing processes, not ETN.