Spironolactone is commonly used in dermatology for acne vulgaris treatment in women due to its anti-androgen effects. Recent studies of spironolactone have shown promising results for its use for acne in adult women. 1-6 However, studies examining the efficacy of spironolactone for pediatric patients are lacking. In this retrospective review, we studied the effectiveness and safety of spironolactone for acne treatment in female adolescents. 2 | ME THODS The criteria and methods for the current study are similar to our recent report on the use of spironolactone in adult females. 6 Upon receiving approval from Mayo Clinic's Institutional Review Board, an electronic search of institutional medical records (January 1, 2007, through December 31, 2017) was performed to identify patients younger than 21 years of age treated at Mayo Clinic. Inclusion criteria included the following: females with a diagnosis of acne made