Acanthosis nigricans chez l'enfant et syndrome de Crouzon

Acanthosis nigricans in children is often a cutaneous marker of insulin resistance. However, it may also form part of diverse diseases, notably those of genetic origin. The association of craniosynostosis and acanthosis nigricans allows incrimination of the FGFR3 gene from the outset and diagnosis of Crouzon syndrome with acanthosis nigricans. In the present case, dermatological examination allowed an aetiology of craniosynostosis to be determined.