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Borderline Personality Disorder

Borderline personality disorder is a fairly recent label of a variously conceptualized phenomenon which has been characterized by affective instability and emotional crises, cognitive problems, impulsivity, and intense and unstable personal relationships. This chapter reviews the historical background, epidemiology, and clinical picture (including comorbidity) of borderline personality disorder. Although progress toward validation of this diagnosis has been made, the current definition does not appear to meet the accepted gold standard criteria for a syndrome that is currently considered valid (and reliable). The natural history of what is known is reviewed, as well as the common complications, including self-mutilation and suicide attempts. Treatment remains challenging at best, with few interventions meeting rigorous randomized controlled trial standards.