Borderline personality disorder (BPD), also known as emotionally unstable personality disorder (EUPD), is the most commonly recognised personality disorder. It is characterised by a pattern of emotional instability and unstable relationships with other people. The Fact Sheets are produced as part of team partnership. An expert or experts in the field being discussed drafts text to cover elements of the disorder: what's it like, what problems occur because of it, what can be done to help the person, and how likely is it that the person's life might improve. Borderline personality disorder + Young People What is Borderline personality disorder? BPD is a term used to describe a pattern of problems that usually start in adolescence or early adulthood and affect most areas of life, causing the person significant distress over a number of years. It is possible to have many of these problems or only a few. Borderline personality disorder (BPD) is characterized by extreme emotional turmoil that leads to an unstable sense of self, volatile relationships and self-destructive behavior, including suicide attempts. People with BPD are often overwhelmed by intense anger and feelings of abandonment, emptiness, shame and self-loathing. BPD affects both adolescents and young adults. Although initially intended to help chronically suicidal individuals diagnosed with borderline personality disorder (BPD; please refer to the accompanying fact sheet for information on BPD), DBT has since been adapted for and used to effectively treat a number of other psychological problems.