By Gary M. White, MD

Courtesy O. Dale Collins, MD
Hair Collar Sign

The hair collar sign, aka hair necklace, is a congenital ring of hair on the scalp surrounding a central lesion.


A ring of hair is seen around a congenital lesion, usually of the scalp.


Careful clinical evaluation and MRI of the brain are indicated prior to biopsy or excision of these scalp lesions.


Aplasia Cutis Congenita with Hair Collar Sign. Actas Dermo-Sifiliograficas


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