Another reason has to do with a self with Borderline Personality Disorder will tend to also be wishy-washy when it comes to physical violence as well. Meaning that a being with borderline personality disorder will resort to violence if others engage in it first or demonstrate symptoms that it will expand favor from others in some method. Yet as a rule may not even be a really violent or even combative man or woman--this is what 'Borderline' means and relates to. Inner Aspects of Borderline Personality Disorder: A person with borderline personality disorder or mentally shaky personality disorder is exclusively relying upon peer influence. Above all others, those with this particular circumstance are more likely to peer pressure and easily manipulated by peer influence. I can offer several example cases as to why I assume it is driven by an human being's need to nourish off acceptance.
Handy Online Medical Dictionary