The halo scalp ring is a common cause of alopecia in newborns and is caused by pressure from prolonged compression by the cervix on the scalp during delivery, resulting in sloughing of neonatal hair.


A circumferential ring of both erythema, alopecia and even necrosis extends around the scalp and forehead. The changes are noted soon after birth. Caput succedaneum (soft tissue swelling and bruising about the head and scalp) is usually associated.


No treatment is indicated. It generally has a good prognosis. However, scarring may occur.

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