WHAT IS THE DIFFERENCE BETWEEN ‘CLASSIC’ & ‘QUIET’ BORDERLINE PERSONALITY DISORDER? Borderline Personality Disorder (BPD) is a very complex mental health condition, which is often very misunderstood & stigmatised. There is also a common misconception that everyone with BPD behaves in the same way, which is far from the truth. Before we look at different ways it can manifest, let's revisit what BPD is... What is BPD? The criteria used to diagnose BPD using The Diagnostic & Sta