Narcissistic personality disorder is named for Narcissus, from Greek mythology, who fell in love with his own reflection. Freud used the term to describe persons who were self-absorbed, and psychoanalysts have focused on the narcissist's need to bolster his or her self-esteem through grandiose fantasy, exaggerated ambition, exhibitionism, and feelings of entitlement.
Donald W. Black, DSM-5 Guidebook: The Essential Companion to the Diagnostic and Statistical Manual of Mental Disorders
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