Malignant narcissism is a psychological syndrome comprising a mix of narcissism, antisocial behavior, sadism, and a paranoid outlook on life.^[1] Malignant narcissism is not a diagnostic category defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR). Rather, it is a subcategory of narcissistic personality disorder (NPD)^[2] which could also include traits of antisocial personality disorder or paranoid personality disorder.

Malignant narcissists are grandiose and always ready to raise hostility levels, which undermines the families and organizations in which they are involved, and dehumanizes the people with whom they associate.^[3] (Source: Malignant narcissism – Wikipedia)