Narcissism
Narcissism is a concept with multiple layers: from a normal personality trait to a severe clinical disorder. The term comes from the Greek myth of Narcissus, who fell in love with his own reflection. Freud introduced the concept of primary narcissism (1914) as a normal stage of development.
Narcissistic Personality Disorder (NPD) is characterized by a persistent pattern of grandiosity, need for admiration, and lack of empathy. DSM-5 requires at least five of nine criteria: grandiose sense of self-importance, fantasies of unlimited power, belief in being special, excessive need for admiration, sense of entitlement, interpersonal exploitation, lack of empathy, envy, and arrogant behavior.
Heinz Kohut revolutionized the understanding of narcissism with his self psychology (1971). For Kohut, pathological narcissism is not an excess of self-love but a deficit: an early narcissistic wound that leaves the person with a fragile self, dependent on external validation. Grandiosity is a defense against profoundly unstable self-esteem.
Otto Kernberg (1975) proposed an alternative view, in which pathological narcissism reflects a grandiose self organization that fuses the ideal self, ideal object, and real self to defend against envy and rage. His understanding emphasizes unconscious aggression and primitive object relations.
Contemporary research distinguishes between grandiose narcissism (extraverted, dominant, exploitative) and vulnerable narcissism (introverted, hypersensitive, with chronic shame). Both share a core of self-centeredness and empathic difficulties but manifest in very different ways.
Narcissism as a personality trait (not a disorder) exists on a spectrum. A degree of narcissism is adaptive: it enables self-confidence, ambition, and leadership capacity. Problems arise when narcissism is rigid, disproportionate, and causes suffering to the individual or those around them.