<unk><unk><unk>  disorder may stem from a specific childhood stimulus (e.g., alcohol/drug addicted parents, bullying, abuse) in an environment where it was not safe to express frustration or anger. Families in which the honest expression of feelings is forbidden tend to teach children to repress and deny their feelings and to use other channels to express their frustration. For example, if physical and psychological punishment were to be dealt to children who express anger, they would be inclined to be<unk><unk> . Children who sugarcoat hostility may have difficulties being assertive, never developing better coping strategies or skills for self-expression. They can become adults who, beneath a "seductive veneer," harbor "vindictive intent," in the words of Timothy F. Murphy and Loriann Oberlin. Alternatively individuals may simply have difficulty being as directly<unk>  or assertive as others. Martin Kantor suggests three areas that contribute to<unk><unk><unk>  anger in individuals: conflicts about dependency, control, and competition, and that a person may be termed<unk><unk><unk>  if they behave so to few people on most occasions.
Passive–aggressive personality disorder
Haltlose personality disorder
Dependent personality disorder
Cluster B personality disorders
Self-defeating personality disorder
Sadistic personality disorder
Histrionic personality disorder
Narcissistic personality disorder