From grandiosity to a lack of empathy, understanding the specific traits of narcissistic personality disorder is crucial for protecting yourself from abuse. — Narcissistic personality disorder, or NPD, is a condition that affects an estimated 1% of the population. Characterized by grandiosity, a lack of empathy, and a need for admiration, NPD can cause significant problems in relationships and in everyday life. For those who have been affected by a narcissist, understanding the…