The DSM-IV, a psychological diagnostic source, recently came out with a list of the criteria for NPD (Narcissistic Personality Disorder). A person displaying a pattern of at least five of the following signs indicates that there is a strong possibility that he/she is a narcissist.
1. Has a grandiose sense of self-importance.
2. Is preoccupied with fantasies of unlimited success, power, brilliance, beauty, or ideal love.
3. Believes that he/she is "special" and can only be understood by, or should associate with, other special or high-status people or institutions.
4. Requires excessive admiration.
5. Has a sense of entitlement, i.e., unreasonable expectations that others will treat him/her with favor or will automatically comply with his/her expectations.
6. Is interpersonally exploitative, i.e., takes advantage of others to achieve his/her own ends.
7. Lacks empathy and is unwilling to recognize or identify with the feelings and needs of others.
8. Is often envious of others or believes that others are envious of him/her.
9. Shows arrogant, haughty behavior or attitude.
10. Will often have temper tantrums, unreasonable expectations, shocking selfishness, and a complete inability to engage in teamwork.