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A delusion [a] is a false fixed belief that is not amenable to change in light of conflicting evidence. [2] As a pathology, it is distinct from a belief based on false or incomplete information, confabulation, dogma, illusion, hallucination, or some other misleading effects of perception, as individuals with those beliefs are able to change or readjust their beliefs upon reviewing the evidence.
Somatic type: delusions that the person has some physical defect or general medical condition; Mixed type: delusions with characteristics of more than one of the above types but with no one theme predominating. Unspecified type: delusions that cannot be clearly determined or characterized in any of the categories in the specific types. [16]
Patients with a wide range of mental disorders which disturb brain function experience different kinds of delusions, including grandiose delusions. [32] Grandiose delusions usually occur in patients with syndromes associated with secondary mania, such as Huntington's disease, [33] Parkinson's disease, [34] and Wilson's disease. [35]
The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) enumerates eleven types of delusions. The International Classification of Diseases (ICD-11) defines fifteen types of delusions; both include persecutory delusion. They state that persecutory type is a common delusion that includes the belief that the person or someone close to ...
In rare instances, it can include delusions of immortality. [9] Syndrome of delusional companions is the belief that objects (such as soft toys) are sentient beings. [10] Clonal pluralization of the self, where a person believes there are multiple copies of themselves, identical both physically and psychologically, but physically separate and ...
Research shows that 50 to 75 percent of people with bipolar disorder experience psychotic symptoms at some point in the course of their illness, like delusions or hallucinations. Simultaneous ...
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“The vibe I got was a delusions of grandeur thing, like a religious zealot," Evelyn Aschenbrenner, an American who served in Ukraine's international legion, said in an interview.