Narcissistic personality disorder is more common than histrionic personality disorder.

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Histrionic personality disorder is more common than narcissistic personality disorder. Prevalence rates in the general population suggest that histrionic personality disorder occurs in about 1.8% to 2.9%, whereas narcissistic personality disorder is less common, with estimates around 0.8% to 6.2%, depending on the criteria and methods used for assessment. However, both conditions are relatively rare and their prevalence can vary widely depending on the population studied and the diagnostic criteria applied.

Narcissistic Personality Disorder Is More Common Than Histrionic Personality Disorder