These are the causes of borderline personality disorder (BPD) you need to know.br br What causes borderline personality disorder? Here to answer that question is leading clinical psychologist Dr. Ramani Durvasula.br br She discusses:br - The biological factors affecting BPDbr - The environmental factors affecting BPDbr - What are some examples of environmental factors that cause BPD?br - What research is currently being done surrounding borderline personality disorder?br - The importance of providing support for parents, who can, in turn, help their children. br br Dr. Ramani also shares tips on spotting the early signs of borderline personality disorder.