A delusion of grandeur is a false belief in one's importance or greatness. A person may believe, for instance, that they are famous, can end ...Whataredelusionsofgrandeur?MedicallyreviewedbyTimothyJ.Legg,Ph.D.,CRNP—WrittenbyZawnVillinesonApril27,2018Whatarethey?TypesSymptomsCausesTreatmentOutlookAdelusionofgrandeurisafalseorunusualbeliefaboutone’sgreatness.Apersonmaybelieve,forinstance,thattheyarefamous,canendworldwars,orthattheyareimmortal.Delusionsofgrandeur,alsocalledgrandiosedelusions,oftenaccompanyothermentalhealthsymptoms,includingotherdelusions.Themayberelatedtomentalorphysicalhealthconditions,includingschizophrenia,bipolardisorder,orsometypesofdementia.Inthisarticle,wetakeamorein-depthlookatdelusionsofgrandeur,thedifferenttypes,symptoms,causes,andpossibletreatments.Whataredelusionsofgrandeur?ShareonPinterestAdelusionofgrandeurisafalsebeliefinone’simportanceorgreatness.Peopleexperiencingdelusionsofgrandeurseethemselvesasgreat,highlyaccomplished,moreimportantthanothers,orevenmagical.Thedelusionmaybepersistent,oritmayappearonlyperiodically.Somepeoplewithdelusionsofgrandeuralsoexperienceotherdelusions,suchasafearofpersecutionorunusualreligiousbeliefs.However,adelusionofgrandeurismorethanjustveryhighself-esteemoraninflatedsenseofself-importance.Itmarksasignificantdisconnectionfromtherealworld.Apersonwithdelusionsofgrandeurmaycontinuetobelieveinthedelusioninspiteofcontradictoryevidence.TypesDelusionsofgrandeurcomeinmanyforms.Manypeopleexperiencedelusionsofasimilarthemeovertime.Delusionsofgrandeurcanmanifestinvirtuallylimitlessways.Someofthemostcommontypesinclude:aninflatedbeliefinone’sownimportance,suchashavingthepowertoendwarabeliefthatoneisfamousoroccupiesahighpositioninsocietyabeliefthatoneisareligiousleaderabeliefinone’sabilitytoliveforeverafalsebeliefthatonecannotbeharmedbydiseaseorinjuryaninflatedsenseofintelligenceabeliefthatonepossessesmagicalskills,suchastheabilitytoreadmindsCulturalfactorscanaffectthecontentofaperson’sdelusions.Thisisbecausecultureaffect