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What causes narcissistic personality disorder?

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.

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Personality disorders are a group of mental illnesses in which how you think about things, how your ...
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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.