Actually personality disorders are somewhat controversial in the medical/psychiatric field, and diagnoses require a lot of time and effort on the part of the practitioner. Since personality disorders skirt a fine line between what society considers "normal variation" and what are medically-diagnosable disturbances in thought patterns, many clinicians don't diagnose them. And treatment for something like BPD is complex. It's only when you get out to a research institution (like McLean) that something like BPD has a chance to receive diagnosis. It's not like you run a blood test and say, heyyyy, you've got BPD.
His depression, however, you'd expect was previously diagnosed if he was seeing a psychiatrist or psychologist.
