Non-Classic Congenital Adrenal Hyperplasia in Two Adolescents With Gender Dysphoria

The care of transgender individuals is multidisciplinary including medical, surgical, psychiatric, and psychological health professionals. We here report 2 cases of nonclassic congenital adrenal hyperplasia (CAH) coincidently discovered during the clinical and biochemical evaluation prior to hormonal treatment for gender dysphoria. Elevated 17-OH-progesterone and androstenedione led to further investigations including adrenocorticotropic hormone stimulation test and genetic evaluation of 21CYPA2 confirming the diagnosis of CAH in both individuals. The findings may have implications for future surgical treatment and in the case of transwomen for the choice of antiandrogenic treatment. These cases therefore confirm the importance of thorough clinical and biochemical evaluation of transgender individuals before initiation of hormone therapy.