What psychological condition is characterized by delusion of one's own wealth, power, or greatness?

Megalomania refers to a psychological condition where an individual exhibits delusions of their own wealth, power, or greatness. This condition is not simply about having a high self-esteem or self-importance; instead, it involves an intense belief that one is more significant than they actually are, often accompanied by fantasies of limitless success or authority. People with megalomania may become obsessed with their perceived superiority and may act in ways that are self-aggrandizing, believing they are entitled to special treatment due to their supposed grandeur.

While other terms like narcissism, grandiosity, and egomania also point toward aspects of inflated self-view, megalomania specifically highlights the delusional component and a somewhat extreme facet of such beliefs. Narcissism can encompass a range of traits about self-love and a need for admiration but does not strictly denote the delusions of grandeur associated with megalomania. Grandiosity describes an exaggerated sense of importance and superiority but may not capture the delusional aspect as explicitly as megalomania. Egomania also focuses on self-centered behaviors but lacks the distinctiveness of delusions tied to wealth or power that is characteristic of megalomania. Thus, megalomania is the most