Grandiosity with expectations of superior treatment from other people
Fixated on fantasies of power, success, intelligence, attractiveness, etc.
Self-perception of being unique, superior, and associated with high-status people and institutions
Needing continual admiration from others
Sense of entitlement to special treatment and to obedience from others
Exploitative of others to achieve personal gain
Unwilling to empathize with the feelings, wishes, and needs of other people
Intensely envious of others, and the belief that others are equally envious of them
Pompous and arrogant demeanor
Narcissistic personality disorder usually develops in adolescence or during early adulthood.[6] It is not uncommon for children and adolescents to display some traits similar to those of NPD, but such occurrences usually are transient, and do not meet the criteria for a diagnosis of NPD.[9] True symptoms of NPD are pervasive, apparent in varied situations, and rigid, remaining consistent over time. The NPD symptoms must be sufficiently severe to the degree that significantly impairs the person's capabilities to develop meaningful human relationships. Generally, the symptoms of NPD also impair the person's psychological abilities to function, either at work, or school, or important social settings. The DSM-5 indicates that the traits manifested by the person must substantially differ from cultural norms, in order to qualify as symptoms of NPD.[6]