A pervasive pattern of instability in several areas (interpersonal relationships, self-image and affects) associated with marked impulsivity, which arises in adolescence or early adulthood and can be recognized in a variety of contexts, as indicated by five (or more) of the following criteria: Intense fear of abandonment, which subjects frantically try to avoid, be it real or imagined. A tendency to have unstable and intense interpersonal relationships, which alternate between extremes of idealization and devaluation. Identity disturbance, characterized by markedly and persistently unstable self-image or sense of self. Impulsivity in at least two potentially self-damaging contexts (e.g., spending, sex, substance use, reckless driving, binge eating). Recurrent suicidal (gestures or threats) or self-mutilating behavior Marked reactivity of mood leading to affective instability (e.g, intense episodic dysphoria, irritability or anxiety, usually lasting a few hours and only rarely more than a few days). Chronic feelings of emptiness. Difficulty controlling anger, which is often inappropriate or excessive (e.g., frequent displays of temper, constant anger, recurrent physical fights). Transient and stress-related paranoid ideation or severe dissociative symptoms.

Modified from DSM-5, APA, 2013