Clitoromegaly Secondary to Exogenous Androgen Exposure From Paternal Skin to Skin Transfer

Clitoromegaly is the abnormal enlargement of the clitoris. Its etiology is often divided into congenital and acquired causes, leading to a differential diagnosis that is quite broad. Workup often includes serum hormone testing, imaging studies, and sometimes an investigation into genetic and nonhormonal causes, which can be obtained from a detailed patient history. Exposure to exogenous or endogenous androgens can directly stimulate and enlarge the clitoris, resulting in early virilization. Transdermal testosterone gel can be transferred from the skin of an adult to the skin of a child. Topical testosterone gel is an approved therapy for the treatment of hypoandrogenism in males. While it offers a convenient means of treatment, there is a concern about unintentional exposure to females and children from skin contact with the application site. Here, we report a case of an infant who presented to a pediatric endocrinology clinic for clitoromegaly that was possibly due to exogenous exposure to testosterone.