[Essential primary cutis verticis gyrata]

OBJECTIVE: To report a rare case of a child with essential primary Cutis verticis gyrata. REPORT: Nine-year-old boy with extensive hypertrophy of scalp skin, with a cerebriform appearance. No underlying neurologic and ophthalmologic disorders were found, and no other cases were described in his family. COMMENTS: The diagnosis of primary Cutis verticis gyrata was established by thickening of the scalp and absence of neurologic and ophthalmologic abnormalities. Differential diagnosis comprises secondary conditions such as: cerebriform intradermal nevus, pachydermoperiostosis, acromegaly, and inflammatory diseases of the scalp. This is the first report of a child with this form of Cutis verticis gyrata.