Key Difference: Narcissistic Personality Disorder (NPD) is a medical disorder in which people exhibit unstable and intensive emotions. The patient experiences an inflated sense of self-importance and superiority compared to others. Histrionic Personality Disorder (HPD) is a mental disorder in which people are more emotionally vulnerable and require constant approval from their peers. They are also associated with inappropriately seductive, dramatic, flirtatious, exaggeration, manipulative and self-indulgence behavior.
Narcissistic Personality Disorder (NPD) and Histrionic Personality Disorder (HPD) are two different medical conditions that can affect a person’s ability to live a normal stress free life. These two conditions are often confused as they have a few similar symptoms. A person suffering from NPD is constantly concerned about his own well-being and considers himself to be superior and very important compared to others. A person suffering from HPD requires constant attention and is always trying to be the center of attention. These are two different medical conditions and should be considered as such.