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    GlossaryWoolly Hair Nevus

    rare condition with patches of tightly curled, frizzy hair

    Woolly Hair Nevus (WHN) is a rare, non-hereditary condition characterized by patches of tightly curled, frizzy hair that differ in texture from the individual's normal hair. These patches typically appear at birth or during early childhood and are often associated with pigmented skin lesions or other dermatological abnormalities.

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