Narcissism
Narcissism is a self-centred personality style characterised by an excessive preoccupation with oneself and one's own needs, often at the expense of others. It is named after the Greek mythological figure Narcissus, who fell in love with his own reflection, and it has been studied as a psychological construct since the early twentieth century. In psychology the term refers both to a normal personality dimension on which people differ and to a pathological condition that can impair relationships and functioning. Narcissism exists on a continuum that ranges from normal to abnormal personality expression[^c1].
Two principal expressions are distinguished. Grandiose, or "thick-skinned," narcissism involves overt superiority, dominance, entitlement, and a confident, exploitative interpersonal style. Vulnerable, or "thin-skinned," narcissism involves shame, hypersensitivity, neediness, and social withdrawal[^c2]. Both are now understood as expressions of a shared antagonistic core—selfishness, entitlement, lack of empathy, and devaluation of others[^c6]—rather than as entirely separate conditions, and individuals may oscillate between the two.
Narcissistic personality disorder (NPD) is the clinical condition associated with severe, persistent narcissistic traits. It is a complex and heterogeneous personality disorder characterised by patterns of grandiosity, entitlement, low empathy, and interpersonal difficulties[^c3]. Diagnosis is based on clinical criteria rather than biomarkers: DSM-5-TR retains a categorical definition requiring five of nine criteria, while ICD-11 classifies personality disorder by severity and trait domains and no longer lists NPD as a separate category. Prevalence estimates vary widely, from roughly 1 per cent to 6 per cent depending on the instrument and population, with higher rates in men.
Narcissism entered psychiatric nosology only in 1980, when DSM-III formally introduced NPD as a distinct category[^c4], although psychoanalytic discussions date back to Freud's 1914 essay On Narcissism. Subsequent theories by Otto Kernberg and Heinz Kohut shaped the modern understanding of narcissistic pathology, and the introduction of the Narcissistic Personality Inventory in 1979 moved research toward large-sample studies of subclinical traits.
Research on origins points to a substantial genetic component alongside individual-specific environmental influences, while longitudinal evidence indicates that parental overvaluation predicts childhood narcissism and parental warmth predicts self-esteem[^c5]. Narcissism is associated with impaired empathy, fragile self-esteem, entitlement, exploitation, and difficulties in romantic, family, and workplace relationships. Treatment rests on psychotherapy, with schema therapy having the strongest trial support, though the evidence base remains limited. The concept has also become a cultural keyword, invoked in debates about social media, generational change, and the responsible use of psychiatric labels.