Borderline personality disorder (BPD) is a serious mental illness marked by unstable moods, behavior, and relationships. In 1980, theDiagnostic and Statistical Manual for Mental Disorders, Third Edition(DSM-III) listed BPD as a diagnosable illness for the first time. Most psychiatrists and other mental health professionals use the DSM to diagnose mental illnesses.
This is historical material “frozen in time”. The website is no longer updated and links to external websites and some internal pages may not work.
