Erythema toxicum — also called erythema toxicum neonatorum (ETN) — doesn’t cause any symptoms and goes away on its own. So, no treatment is needed. You can care for your newborn’s skin normally: Sponge bathe your baby with a gentle washcloth until the umbilical cord falls off, which usually takes about 1–4 weeks. The cause of erythema toxicum neonatorum is unknown. Multiple theories have been proposed to explain this common disorder. Don’t unnecessarily keep changing lotions or soaps to make it

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