The following paper aims to provide an overview of ‘Narcissistic Personality Disorder’ (NPD). It endeavors to do the same by covering the disorders various aspects, starting by exploring the terms mythological origins, the evolution of the definition and usage of the term, as well as psychoanalytic contributions. The paper then moves on to the various subtypes of the disorder as categorized by various theorists, followed by the diagnostic criteria and differential diagnosis as written in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR). The contributions and theories of Otto Kernberg and Heinz Kohut have also been touched upon, along with the treatment methods and therapeutic approaches used in clinical settings to treat NPD. Finally, the paper concludes with the topics of the societal impact of NPD and also briefly talks about the hypothesis of a ‘narcissism epidemic’.