Delusion Grandiose delusion 2023-07-28T13:55:40Z Megalomania Delusional beliefs of a fantastical, expansive, or supernatural quality related to power, ability, wealth, or station. They are often related to origin (aristocratic lineage, royal birth, being raised as a foster child), possessions (owning vast estates, castles, etc., which are withheld through intrigue), abilities (being great inventors, discoverers, artists, possessors of special wisdom, gifted with inspiration), and status (adviser to prominent diplomats, the true director of political destinies). Grandiose delusions may be related to affective states, substance use, or may occur independently.