Cluster B is a group of personality disorders described as "unpredictable" and "dramatic" Unlike cluster a & c, cluster b has 4 disorders instead of 3. These consist of, Histrionic personality disorder (HPD), Borderline personality disorder (BPD) , Narcissistic personality disorder (NPD), and Antisocial personality disorder (ASPD). Scoll down to view specifics
.
View HPD here
View BPD here
View NPD here
View ASPD here