Gypsy,
Blitxen and I are talking about Narcissistic Personality Disorder and traits that are associated with it, and some other.
You are talking about the narcissistic personality, not the disorder. Below is a clip from the Mayo Clinic site explaining the differences. It’s not high tech.
http://www.mayoclinic.com/health/narcissistic-personality-disorder/DS00652/DSECTION=2
Signs and symptoms
Narcissism itself is a personality trait, a much higher regard for and love of oneself than for others. The word “narcissism” comes from a character in Greek mythology. Narcissus, a handsome youth, doesn’t think any of his female suitors are worthy of his beauty. When the gods condemn him to look at his reflection in a pool, he stares at himself lovingly for so long that eventually he simply withers away and dies.
Most specialists think of narcissism as lying along a continuum, from people with good psychological health to those with narcissistic personality disorder.
People who have a narcissistic personality style rather than narcissistic personality disorder are generally psychologically healthy, but may at times be arrogant, proud, shrewd, confident, self-centered and determined to be at the top. They do not, however, have an unrealistic image of their skills and worth and are not dependent on praise to sustain a healthy self-esteem.
You may find these individuals unpleasant or overbearing in certain social, professional or interpersonal encounters, but they aren’t necessarily unhealthy.
Pathological narcissism
The other end of the continuum  narcissistic personality disorder  is a persistent inability to establish a realistic, stable self-image, therefore creating an overdependence on others to regulate their self-esteem. This unrealistic self-image affects how people with this disorder behave and interact with others.
Individuals with narcissistic personality disorder may come across as conceited or snobbish. They often monopolize conversation. They may belittle or look down on people they perceive as inferior. When they don’t receive the special treatment to which they feel entitled, they may become very impatient or angry.
People with narcissistic personality disorder tend to seek out individuals whom they perceive as equal to their own self-image or to whom they attribute the same special talents and qualities they see in themselves. They may insist on having “the best” of everything  car, athletic club or social circles.
Their personal relationships and interactions are driven by the need for admiration and praise. Consequently, people with narcissistic personality disorder value others primarily according to how well those individuals affirm their unrealistic self-image. This limited value of others usually means that people with the disorder aren’t interested in or aren’t capable of perceiving the feelings or needs of others. They may take advantage of other people to make themselves look as good as they imagine.
On the other hand, seeking admiration also makes people with narcissistic personality disorder vulnerable to criticism. If someone criticizes an individual’s contribution to a project at work, for example, he or she will perceive this comment as an assault on an image that needs to be protected at all costs and may respond with feelings of shame, humiliation or sadness or may express rage, disdain or defensive behaviors.
The shy narcissist
Some specialists have described individuals diagnosed with narcissistic personality disorder as “shy narcissists,” “closet narcissists” or “deflated narcissists.”
These individuals, like others with narcissistic personality disorder, have a grandiose, unrealistic sense of their abilities, achievements and worth, and they often feel disdain for others whom they perceive as less exceptional. They also have vulnerable self-esteems and are very sensitive to criticism. However, these individuals don’t seek admiration or overtly express their sense of superiority.