Most narcissists (75%) are men. NPD is one of a “family” of personality disorders (formerly known as “Cluster B”). Other members: Borderline PD, Antisocial PD and Histrionic PD. NPD is often diagnosed with other mental health disorders (“co-morbidity”) – or with substance abuse, or impulsive and reckless behaviours (“dual diagnosis”). NPD is new (1980) mental […]