Advertisement
The cause of narcissistic personality disorder is unknown at this time. There is some evidence that genetic predisposition and other biological or biochemical factors are involved for some people. Psychological factors are also involved for most people.
Continue Learning about Personality Disorders
Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.