Malignant narcissism is a psychological syndrome comprising an extreme mix of narcissism, antisocial personality disorder, aggression, and sadism. Often grandiose, and always ready to raise hostility levels, the malignant narcissist undermines organizations in which they are involved, and dehumanizes the people with whom they associate.
Malignant narcissism is a hypothetical, experimental diagnostic category. Narcissistic personality disorder is found in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), while malignant narcissism is not. As a hypothetical syndrome, malignant narcissism could include aspects of narcissistic personality disorder as well as paranoia. The importance of malignant narcissism and of projection as a defense mechanism has been confirmed in paranoia, as well as “the patient’s vulnerability to malignant narcissistic regression”.