Handbook of Good Psychiatric Management for Adolescents With Borderline Personality DisorderSomewhere between 11% and 22% of adolescents seeking mental health care in outpatient clinics and between 33% and 49% of those in inpatient units meet the diagnostic criteria for borderline personality disorder (BPD). Despite its high prevalence, however, and the high social and economic costs that it entails, BPD remains underdiagnosed, and sufficient training regarding its fundamentals and clinical management is largely unavailable for mental health