Zachary is a 17-year-old male who appears boastful, conceited, and arrogant. when someone accuses him of being that way, he flies into a rage.

The diagnose for Zacahry would be Narcissistic Personality Disorder (NPD). This type of disorder is characterized also with the following behaviors: the person shows little care for others and is often envious when others are recognized for their achievements. Persons with this type of disorder are also prone to daydreaming and fantasizing about the success that awaits him