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Reduplicative paramnesia
Reduplicative paramnesia is the delusional belief that a place or location has been duplicated, existing in two or more places simultaneously, or that it has been 'relocated' to another site. It is one of the delusional misidentification syndromes and, although rare, is most commonly associated with acquired brain injury, particularly simultaneous damage to the right cerebral hemisphere and to both frontal lobes.
==History==
The term ''reduplicative paramnesia'' was first used in 1903 by neurologist Arnold Pick to describe a condition in a patient with suspected Alzheimer's disease who insisted that she had been moved from Pick's city clinic, to one she claimed looked identical but was in a familiar suburb. To explain the discrepancy she further claimed that Pick and the medical staff worked at both locations.
In retrospect, however, the phenomenon has been found to have been first reported by the Swiss naturalist Charles Bonnet in 1788,〔Charles Bonnet's description of Cotard's delusion and reduplicative paramnesia in an elderly patient (1788) 〕 who described a woman who also had what would now be called Cotard delusion. Henry Head〔Head, H. (1926) ''Aphasia and Kindred Disorders''. London: Cambridge University Press.〕 and Paterson and Zangwill later reported on soldiers who had the delusional belief that their hospital was located in their home town, although in these cases traumatic brain injury seemed to be the most likely cause.
It wasn't until 1976 that serious consideration was given to the disorder, when three cases were reported by Benson and colleagues. Benson not only described striking reduplication syndromes in his patients, but also attempted to explain the phenomena in terms of the neurocognitive deficits also present in the patients. This was one of the first attempts to give a neuropsychological explanation for the disorder.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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