Borderline Personality Disorder (BPD) is classified in the DSM-5 as a personality disorder marked by pervasive instability in interpersonal relationships, self-image, and affect, alongside marked impulsivity. The diagnostic criteria require five or more of the following nine symptoms: frantic efforts to avoid abandonment (real or imagined), unstable interpersonal relationships, identity disturbance, impulsive behaviors that are potentially self-damaging, recurrent suicidal behavior or self-harm, affective instability, chronic feelings of emptiness, intense or inappropriate anger, and transient, stress-related paranoia or dissociation. This framework is widely used by clinicians to identify BPD and differentiate it from other disorders, guiding treatment plans that may include @Dialectical Behavior Therapy (DBT), medication, and support networks. I recommend reading @Loving Someone with Borderline Personality Disorder and @I Hate You, Don't Leave Me.

Related

• @Borderline Personality Disorder (BPD) Glossary
• @Why is Borderline Personality Disorder Called Borderline?

Studies

• Familial Risk and Heritability of Diagnosed Borderline Personality Disorder
• A Biosocial Developmental Model of Borderline: Elaborating and Extending Linehan’s Theory

Contexts

• #borderline-personality-disorder (this is the @Root Memo)
• #borderline-lexicon (See: @Borderline Personality Disorder (BPD) Glossary)
• #cluster-b and #cluster-b-personality (See: @Cluster B)