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Patients with the behavioral variant of frontotemporal dementia (bvFTD) develop striking deficits in fundamental components of social and emotional behavior, including emotional blunting, indifference, callousness, and loss of empathy for even their closest family members early in the course of the disease.1 Abnormal processing of emotional facial expressions is considered a key factor in the empathy deficits observed in bvFTD.
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