The American Psychiatric Association (APA) defines a personality disorder as “a way of thinking, feeling and behaving that deviates from the expectations of the culture, causes distress or problems functioning, and lasts over time.”

Borderline personality disorder (BPD) is characterized by impulsivity and instability in mood, self-image, and personal relationships. This instability often disrupts family and work, long-term planning and the individual’s sense of self-identity. Many people with BPD also have a co-occurring disorder such as depression, anxiety, substance abuse or eating disorders.