The past decade has seen an unprecedented increase in research activity on personality disorders in adolescents. The increase in research activity, in addition to major nosological systems legitimizing the diagnosis of borderline personality disorder (BPD) in adolescents, highlights the need to communicate new research on adolescent personality problems to practitioners. In this review, we provide up-to-date information on the phenomenology, prevalence, associated clinical problems, etiology, and intervention for BPD in adolescents. Our aim is to provide a clinically useful practitioner review and to dispel long-held myths about the validity, diagnostic utility, and treatability of personality disorders in adolescents
