Narcissistic personality disorder is named for Narcissus, from Greek mythology, who fell in love with his own reflection. Freud used the term to describe self-absorbed persons, 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. A perfect description of the prototypical (especially female) Instagram user, as Instagram is Narcissism distilled to an App.