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Narcissism is a self–centered personality style characterized as having an excessive preoccupation with oneself and one’s own needs, often at the expense of others.
Narcissism exists on a continuum that ranges from normal to abnormal personality expression.While many psychologists believe that a moderate degree of narcissism is normal and healthy in humans, ere are also more extreme forms, observable particularly in people who are excessively self-absorbed, or who have a mental illness like narcissistic personality disorder (NPD), where the narcissistic tendency has become pathological, leading to functional impairment and psychosocial disability.