Antisocial personality disorder (abbreviated APD or ASPD) is a psychiatric diagnosis in the DSM-IV-TR recognizable by the disordered individual's disregard for social rules and norms, impulsive behavior, and indifference to the rights and feelings of others. The World Health Organization's ICD-10 diagnostic manual uses dissocial personality disorder instead. The concept psychopathy (not to be confused with psychosis) generally denotes a related but more severe personality disorder.
Sociopathy is sometimes claimed to be a less formal synonym for this disorder based on terminology from an older edition of the DSM. Various experts have co-opted the terms psychopathy and sociopathy inconsistently to mark differences in meaning they believe are theoretically important although there is a consensus that both terms refer to personality disorders with prominent norm-breaking and socially disruptive behavior

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http://en.wikipedia.org/wiki/Antisoc...ality_disorder