I think he likely suffers from a "Narcissistic Personallity Disorder"
First here is an explanation of what a personality disorder is:
A personality disorder is a pattern of deviant or abnormal behavior that the person doesn't change even though it causes emotional upsets and trouble with other people at work and in personal relationships. It is not limited to episodes of mental illness, and it is not caused by drug or alcohol use, head injury, or illness. There are about a dozen different behavior patterns classified as personality disorders by DSM-IV. All the personality disorders show up as deviations from normal in one or more of the following:
(1) cognition -- i.e., perception, thinking, and interpretation of oneself, other people, and events;
(2) affectivity -- i.e., emotional responses (range, intensity, lability, appropriateness);
(3) interpersonal functions;
(4) impulsivity.
These are the DSM criteria for a diagnosis of Narcissistic Personality Disorder.
An exaggerated sense of self-importance (e.g., exaggerates achievements and talents, expects to be recognized as superior without commensurate achievements)
Preoccupation with fantasies of unlimited success, power, brilliance, beauty, or ideal love
Believes he is "special" and can only be understood by, or should associate with, other special or high-status people (or institutions)
Requires excessive admiration
Has a sense of entitlement
Selfishly takes advantage of others to achieve his own ends
Lacks empathy
Is often envious of others or believes that others are envious of him
Shows arrogant, haughty, patronizing, or contemptuous behaviors or attitudes