The primary goal of this study is to examine the feasibility and efficacy of DCS augmentation to CBT/ERP at the end of the session. The main treatment outcome will be measured by the Yale-Brown Obsessive Compulsive Scale (Y-BOCS). The secondary goal of the study is to investigate the safety of DCS in adolescents with OCD. 18 adolescents will be recruited in this study. Patients who are currently on medication therapies for OCD must be stable for at least 12 weeks prior to and during the study.