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A Case of Capgras Syndrome With Frontotemporal Dementia

Metin, Baris MD, PhD*; Arikan, Mehmet K. MD, PhD*,†; Kalem, Sukriye A. PhD; Tarhan, Nevzat MD*

Cognitive and Behavioral Neurology: June 2019 - Volume 32 - Issue 2 - p 134–138
doi: 10.1097/WNN.0000000000000191
Case Reports

Capgras syndrome (CS), also called imposter syndrome, is a rare psychiatric condition that is characterized by the delusion that a family relative or close friend has been replaced by an identical imposter. Here, we describe a 69-year-old man with CS who presented to the Kemal Arikan Psychiatry Clinic with an ongoing belief that his wife had been replaced by an identical imposter. MRI showed selective anterior left temporal lobe atrophy. Quantitative EEG showed bilateral frontal and temporal slowing. Neuropsychological profiling identified a broad range of deficits in the areas of naming, executive function, and long-term memory. On the basis of these findings, we diagnosed frontotemporal dementia. This case demonstrates that CS can clinically accompany frontotemporal dementia.

*Department of Psychology, Uskudar University, Istanbul, Turkey

Kemal Arikan Psychiatry Clinic, Istanbul, Turkey

Department of Neurology, School of Medicine, Istanbul University, Istanbul, Turkey

The authors declare no conflicts of interest.

Correspondence: Mehmet K. Arikan, MD, PhD, Halaskargazi Cad. No: 103/4B, Osmanbey, Istanbul, Turkey 34371 (email:

Received November 2, 2018

Accepted February 10, 2019

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