Psychopathy

Psychopathy is a personality disorder or antisocial personality disorder. Psychopaths are unemotional. They do not show concern about the feelings or rights of others. They show almost no empathy, and do not try to conform to social norms. They lack a conscience and do not feel guilt. A similar term is sociopathy.
Many psychopaths are charming and often manage to have superficial ties with other people. They use other people for their own benefit. Psychopaths often show other antisocial behaviour as well, including sadism, violence and deception. They are very selfish and discard people whom they have no further use for. They may have many children by many partners.
The definition of psychopathy has varied. Different definitions are used. They only partly overlap and sometimes seem contradictory.
There are efforts to use behaviour therapy to treat psychopaths; often, this may be done in prisons.
Some people are mislabeled as "psychopaths", but have no problems with social norms, but they are good at influencing people. There is a difference between the sexes as to how psychopathy is shown. Men show it more more as an antisocial pattern of behaviour. In women it shows more as a histrionic pattern (excessive attention-seeking).
Amongst professional psychiatrists, psychopathy is known for being difficult to treat.