“Cat-gras Delusion” – The Man Who Saw His Cat As An Impostor

Capgras syndrome is a strange disorder in which the sufferer becomes convinced that someone close to them has been replaced by an impostor.

Yet now, a new and even stranger variant of the syndrome has been reported – “Cat-gras”. This is the name coined by Harvard neurologists R. Ryan Darby and David Caplan in a new paper in the journal Neurocase. The authors describe the case of a man who believed that his cat was in fact a different cat.

According to Darby and Caplan, the patient

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