Newborn Nursery at LPCH

Sebaceous Hyperplasia

photo by Janelle Aby, MD

In contrast to milia, the raised lesions on the nose in this newborn are sebaceous hyperplasia. The lesions are more yellow than milia and are the result of maternal androgen exposure in utero. Sometimes referred to as "the miniature puberty of the newborn", maternal hormone exposure may also cause vaginal withdrawl bleeding in infant girls and neonatal acne. Sebaceous hyperplasia is a benign finding and spontaneously resolves with time. No evaluation is needed.

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