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https://www.google.com/health/ref/Narcissistic+personality+disorder
Narcissistic personality disorder is a condition characterized by an inflated sense of self-importance, extreme preoccupation with one's self, need for admiration, extreme self-involvement, and lack of empathy for others. Individuals with this disorder are usually arrogantly self-assured and confident. They expect to be noticed as superior. Many highly successful individuals might be considered narcissistic. However, this disorder is only diagnosed when these behaviors become persistent and very disabling or distressing.
Symptoms
A person with narcissistic personality disorder:
Reacts to criticism with rage, shame, or humiliation
Takes advantage of other people to achieve his or her own goals
Has feelings of self-importance
Exaggerates achievements and talents
Is preoccupied with fantasies of success, power, beauty, intelligence, or ideal love
Has unreasonable expectations of favorable treatment
Requires constant attention and admiration
Disregards the feelings of others, lacks empathy
Has obsessive self-interest
Pursues mainly selfish goals
Complications
Relationship and family problems
Alcohol or other drug dependence
Vulnerability in self-esteem makes individuals with this disorder very sensitive to criticism or defeat. Although they may not show it outwardly, criticism may haunt these individuals these individuals and may leave them feeling humiliated, degraded, hollow, and empty.
They may react with disdain, rage, or defiant counterattack. Their social life is often impaired due to problems derived from entitlement, the need for admiration, and the relative disregard for the sensitivities of others.
http://www.mentalhealth.com/dis/p20-pe07.html