Borderline Personality Disorder More Condition_symptoms My Friend Cuts Herself, Can Someone You Tell Me More About This Borderline Personality Disorder?

My friend cuts herself, Can someone you tell me more about this borderline personality disorder? - borderline personality disorder more condition_symptoms

I have bipolar disorder. One of my friends cut a borderline personality disorder and themselves. Can someone tell me more about Borderline Personality Disorder? Do you know someone who they do not?