Generalized keratosis pilaris induced by testosterone injections in a patient with CHARGE syndrome

Keratosis pilaris (KP) is a common disorder of follicular ker-atinization characterized by keratotic follicular papules with vary-ing degrees of perifollicular erythema. Keratosis pilaris affects up to half of normal children and up to three-quarters of children with atopic dermatitis. KP is prominent during adolescence and less common in older people, but it may occur in children and adults of all ages. In this report, we describe the case of a 13-year-old boy known to have CHARGE syndrome who developed general-ized keratosis pilaris after testosterone injections. To the best of our knowledge, this is the first reported case of generalized kerato-sis pilaris induced by testosterone injection.