Generalized acanthosis nigricans in childhood.
Acanthosis nigricans in children is usually associated with obesity. Generalized acanthosis nigricans in childhood is rare. We report a 13-year-old boy with an 8-year history of generalized hyperpigmentation and velvety thickening of the skin. Despite an extensive physical and laboratory examination no evidence of underlying endocrinological or neoplastic disease was found.