Malignant narcissism is a hypothetical, experimental diagnostic category. Narcissistic personality disorder can be found in the Diagnostic in addition to Statistical Manual of Mental Disorders, while malignant narcissism is not. As a hypothetical predicament, malignant narcissism include areas of narcissistic personality disorder in addition to paranoia. The significance about malignant narcissism in addition to of projection as a defense mechanism have been confirmed in paranoia.