What causes narcissism in some cultures?

Unknown: There is no general consensus of agreement on the causes of narcissism, but one viewpoint maintains that injuries to one's sense of self during formative years, such as neglectful or highly critical, parents, can instill a pervasive sense of inferiority and insignificance in the child. The injured person then later compensates for this underlying inferiority with grandiosity and omnipotence.

Narcissism: The hallmark of a narcissist is an immense ego, grandiosity, and self-importance, as well as being entitled, and a tendency to use and objectify others as well as thinking of people in all-good or all-bad terms instead of shades of gray. The core of a narcissist is profound insecurity. Cultural issues are usually not especially clinically relevant.