While there are different ways of classifying narcissists, two categories of narcissism, which have become an important part of research, are:
Grandiose narcissism—usually characterized by extreme confidence in their own superiority. These narcissists are prone to going into a vindictive rage against anyone who dares to criticize them. They have no sense of shame and have often grown up with the knowledge that they are superior to everyone else. As adults, they may have multiple affairs and typically pride themselves on how admired they are by the people around them. They can also be very aggressive in establishing dominance over other people.
Vulnerable narcissism—people high in vulnerable narcissism tend to be more emotionally sensitive (often to the point of being neurotic). They are distressed whenever they don't get the treatment they feel they deserve and often have problems with fear of rejection or being abandoned. In a real sense, vulnerable narcissists are over-compensating for poor self esteem or a history of neglect that can go back to early childhood. They can often shift from feeling superior to feeling inferior depending on how their lives happen to be going at any particular time.