People with cluster B personality disorder have impulsive, dramatic, or erratic behavior. They are unpredictable and find it difficult to control their emotions. Cluster-B includes:
Antisocial personality disorder:
People with antisocial personality disorder are impulsive, irresponsible, and insensitive to others’ feelings or needs. They are quarrelsome, violent, and aggressive. They ignore rules and social norms, face recurrent problems with the law, persistently lie, steal, and con people. They do not remorse for their behavior. Typically the antisocial personality shows up in childhood. These people are at high risk for substance abuse and alcoholism.
Borderline personality disorder:
People with borderline personality disorder have unstable interpersonal relationships, mood swings, fragile self-image, episodes of stress-related paranoia, unpredictable self-destructive actions, and frequent displays of anger. They tend to engage in impulsive and risky behavior, such as unprotected sex, binge drinking, and gambling. They fear being alone or abandoned. So, to manipulate others, they display suicidal behavior or threaten others.
Narcissistic personality disorder:
People with narcissistic personality disorder have an inflated sense of self-importance. They exaggerate their achievements and brag about their attractiveness, success, or power. They constantly seek praise and admiration, lack empathy for other people, act selfishly to gain success, exploit interpersonal relationships, and take advantage of others.
Histrionic personality disorder:
People with histrionic personality disorder constantly seek attention by being overly dramatic and emotional. They are also sexually provocative. They like being the center of attention and feel uncomfortable when ignored or criticized. They are easily influenced by others, have shallow feelings, and are excessively concerned about their physical appearance.