Marguerite Johnson does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Narcissistic personality disorder derives its name from the Greek myth of Narcissus, of which there are several versions. In Ovid's version, which is the most commonly related, the nymph Echo falls in ...

A person with narcissistic personality disorder has an extreme feeling of self-importance, a sense of entitlement, and a need to be admired. He is envious of others and expects them to be the same of ...