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Folie à deux (French for 'madness of two'), [1] also called shared psychosis [3] or shared delusional disorder (SDD), is a psychiatric syndrome in which symptoms of a delusional belief [4] are "transmitted" from one individual to another.
Notably, both delusions and obsessions are different from extreme overvalued beliefs. While extreme overvalued beliefs are shared by individuals of the same culture and/or subculture, [1] this is not true of delusions. A delusion is an inherently false belief that is not shared by anyone else, while an extreme overvalued belief is shared by ...
This glossary covers terms found in the psychiatric literature; the word origins are primarily Greek, but there are also Latin, French, German, and English terms. Many of these terms refer to expressions dating from the early days of psychiatry in Europe; some are deprecated, and thus are of historic interest.
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.
Delusional disorder, traditionally synonymous with paranoia, is a mental illness in which a person has delusions, but with no accompanying prominent hallucinations, thought disorder, mood disorder, or significant flattening of affect. [6] [7] Delusions are a specific symptom of psychosis.
Shared delusion may refer to: Dream sharing; Folie à deux; Shared delusional disorder This page was last edited on 25 November 2018, at 22:54 (UTC). Text is ...
“Their religious extremism was a key driver for their actions and the Trains were likely suffering from a shared delusional disorder which pre-existed those religious convictions,” O’Gorman ...
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 ...