When Narcissistic Grandiosity Crosses the Line June 15, 2018Mental Health, Narcissism, Personality and Character, Personality and Character Disorders, Psychology, Relationships, Social Issues, Spirituality, Substance Abusedelusion, ego inflation, exaggeration, grandiosity, narcissismDr. Simon Narcissistic grandiosity is mostly a matter of exaggeration – especially exaggerated self-importance and capability. And, when such grandiosity goes unchecked, it can lead to much bigger problems.