"BPD is characterised by impairment in interpersonal functioning (including poor empathy, and problems with trust and intimacy) and difficult personality traits, such as disinhibition and antagonism, and impulsivity.

In addition, in BPD, reduced interpersonal trust may lead the individual to be hyper-vigilant about other’s facial expressions or tone of voice, leading to enhanced emotion recognition skills even if talking about other’s mental states (“why are you angry with me?”, or “are you fed up with me?”), which may be socially inappropriate."