In the DSM-5, narcissistic personality disorder is defined as comprising a pervasive pattern of grandiosity (in fantasy or behavior), a constant need for admiration, and a lack of empathy, beginning by early adulthood and present in various contexts, as indicated by the presence of at least five of the following nine criteria:
A grandiose sense of self-importance
A preoccupation with fantasies of unlimited success, power, brilliance, beauty, or ideal love
A belief that he or she is special and unique and can only be understood by, or should associate with, other special or high-status people or institutions
A need for excessive admiration
A sense of entitlement
Interpersonally exploitive behavior
A lack of empathy
Envy of others or a belief that others are envious of him or her
A demonstration of arrogant and haughty behaviors or attitudes
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Cite this: Stephen Soreff. Fast Five Quiz: Narcissistic Personality Disorder - Medscape - Jan 10, 2020.