Delusions of grandeur

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Delusions of grandeur, also known as grandiose delusions (GDs) or expansive delusions, are a subtype of delusion characterized by the exaggerated belief that one is famous, omnipotent, wealthy, or otherwise very powerful or of a high status. Grandiose delusions often carry a religious, science fictional, or supernatural quality. Examples include the extraordinary belief that one is a deity or celebrity, or that one possesses fantastical talents, accomplishments, or superpowers. While non-delusional grandiose beliefs are somewhat common—occurring in at least 10% of the general population—and can influence a person's self-esteem, in some cases they may cause a person distress, in which case such beliefs may be clinically evaluated and diagnosed as a psychiatric disorder. When studied as a psychiatric disorder in clinical settings, grandiose delusions have been found to commonly occur with other disorders, including in two-thirds of patients in a manic state of bipolar disorder, half of those...

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