Delusion Of Grandeur

A delusion of grandeur, or grandiose delusions, are strongly held beliefs that one is wealthier, smarter, more important, more powerful, famous, etc. than is actually true. It is a subtype of delusional disorders that is often associated with schizophrenia, the manic phase of bipolar disorder and substance abuse. This is seen in delusional psychiatric patients who believe that they are famous historical figures, e.g. Napoleon, Julius Caesar, Cleopatra and so forth. This type of delusion serves positive functions in that it preserves and boosts self-esteem in affected patients and is used as defense mechanism against poor self-esteem.