https://www.mayoclinic.org/diseases-conditions/narcissistic-personality-disorder/symptoms-causes/syc-20366662

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Signs and symptoms of narcissistic personality disorder and the severity of symptoms vary. People with the disorder can:

Have an exaggerated sense of self-importance

Have a sense of entitlement and require constant, excessive admiration

Expect to be recognized as superior even without achievements that warrant it

Exaggerate achievements and talents

Be preoccupied with fantasies about success, power, brilliance, beauty or the perfect mate

Believe they are superior and can only associate with equally special people

Monopolize conversations and belittle or look down on people they perceive as inferior

Expect special favors and unquestioning compliance with their expectations

Take advantage of others to get what they want

Have an inability or unwillingness to recognize the needs and feelings of others

Be envious of others and believe others envy them

Behave in an arrogant or haughty manner, coming across as conceited, boastful and pretentious

Insist on having the best of everything — for instance, the best car or office

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