Psychopathy does not officially exist in medicine

Psychopathy is a personality disorder characterized by antisocial behavior and a lack of remorse, but no official diagnostic definition bears this name. The first edition of the Diagnostic and Statistical Manual of Mental Disorders in 1952 preferred to use the term sociopathic personality disturbance. Even during the preparation of the fifth edition of the DSM-V, the suggestion to include an antisocial-psychopathic subtype was rejected.