Definition
By Mayo Clinic Staff

Narcissistic personality disorder is a mental disorder in which people have an inflated sense of their own importance and a deep need for admiration. Those with narcissistic personality disorder believe that they’re superior to others and have little regard for other people’s feelings. But behind this mask of ultra-confidence lies a fragile self-esteem, vulnerable to the slightest criticism.

Narcissistic personality disorder is one of several types of personality disorders. Personality disorders are conditions in which people have traits that cause them to feel and behave in socially distressing ways, limiting their ability to function in relationships and in other areas of their life, such as work or school.

Narcissistic personality disorder treatment is centered around psychotherapy.

It’s not known what causes narcissistic personality disorder. As with other mental disorders, the cause is likely complex. The cause may be linked to a dysfunctional childhood, such as excessive pampering, extremely high expectations, abuse or neglect. It’s also possible that genetics or psychobiology — the connection between the brain and behavior and thinking — plays a role in the development of narcissistic personality disorder.