Narcissism is a complex and multifaceted phenomenon. Narcissism is a personality disorder characterized by an inflated sense of self-importance, a deep need for admiration, and a lack of empathy for others. It is a complex and multifaceted phenomenon that can not only manifest, but can equally be "projected" onto others in a miriad different ways; ....... from grandiose and arrogant behavior to subtle and insidious forms of self-absorption. Causes of Narcissism The causes of