Poor self soothing. Wikapedia list is thus: borderline personality disorder: extreme "black and white" thinking, instability in relationships, self-image, identity and behavior often leading to self-harm and impulsivity. Borderline personality disorder is diagnosed in three times as many females as males.
Borderline. Is a personality disorder characterised by severe mood fluctuations, chaotic unstable interpersonal relationships, disturbed identity & self-image, chronic feelings of emptiness, impulsivity, chronic recurrent suicidal behaviors, transient paranoea or dissociation, & inability to control anger.