People who meet the criteria for narcissistic personality disorder are possessive, arrogant, they consider themselves special, feel important, take advantage of others, they have a high need for admiration, they lack empathy, envy others, and are obsessed with fantasies of unlimited power.

People with antisocial personality disorder do not respect the law and violate the rights of others. They are deceitful, manipulative, impulsive, hostile, irresponsible and ruthless.

Antisocial personality disorder can subside with age. However, older people suffering from this disorder continue to have serious difficulties in interpersonal relationships.

Narcissistic and antisocial personality disorders have many features in common: they often lack empathy, they are suspicious of the intentions of others and are superficial, callous and ruthless, and tend to exploit people.

The difference between the two disorders is that narcissistic personality is not usually associated with delinquency in adulthood or conduct disorder in childhood. A narcissistic personality is less likely to be associated with aggression, impulsiveness, and deception.

Researchers believe that the personality traits of recklessness and impulsivity are typical only for antisocial personality disorder, while the traits of attention-seeking and grandiosity are inherent for narcissism.

Stanton and Zimmerman came to the conclusion that antisocial and narcissistic personality disorders might not be separate disorders but "indicators of a broad externalizing spectrum" sharing characteristics such as impulsiveness and antagonism with other spectrum disorders.

Source: vbox7.com