Finding the imposter: understanding a rare delusional disorder using brain connectivity
His syndrome was a variant of Capgras syndrome, where a patient develops the delusion that a family member has been replaced by an identical imposter. Knowing what to look for, I began finding more and more cases: a man with Alzheimer’s who believed his daughter was an imposter, a woman with a right frontal lobe stroke who believed her house was a replica of her real house.