Antisocial personality disorder is a chronic mental condition in which a person’s way of thinking, perceiving situations and relating to others is dysfunctional and often destructive. A person with antisocial personality disorder tends to manipulate, exploit, antagonize and violate the rights of other people, often with callous indifference. Antisocial personality disorder symptoms usually begin in childhood, but become fully apparent by age 20-30. There are many symptoms for antisocial personality disorder, but disregard for right and wrong, persistent lying, using charm to manipulate others, intense egocentrism, difficulty with the law and lack of empathy are common. To diagnose antisocial personality disorder a series of medical and psychological tests must be run. Typically these tests are: a physical exam, blood test, alcohol and drug screening and psychological evaluation. Once antisocial personality disorder is diagnosed it is often very hard to treat. People with the disorder require close follow-up. Although treatment is individualized for each case, treatment usually includes some form of psychotherapy, medication and skills training for family members to respond to negative behavior.