Borderline Personality Disorder

Borderline personality disorder (BPD) is defined within psychiatry and related fields as a disorder characterized primarily by emotional dysregulation, extreme "black and white" thinking in some areas, and turbulent relationships. The name originated with the idea that individuals exhibiting this type of behavior were on the "borderline" between neurosis and psychosis. This idea has since fallen out of favor, but the name remains in use, as noted in the Diagnostic and Statistical Manual of ...