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Prosopagnosia as unusual presentation of semantic dementia: a case study
Viviana Lo Buono1, Francesco Corallo1, Angela Marra1
1a IRCCS Centro Neurolesi "Bonino Pulejo" , Messina , Italy.
Object:
Semantic dementia is one of the main clinical variants of frontotemporal dementia and it is characterized by severe loss of conceptual knowledge with relative preservation of other cortical abilities.
Methods:
We described a case of a patient affected by right temporal variant of frontotemporal lobar degeneration, characterized by prosopagnosia as an unusual disease onset.
Results:
The neuropsychological evaluation showed a progressive deficit in face recognition and a slow decline in language in the absence of behavioral alterations. Magnetic resonance imaging showed diffuse vascular ischemic lesions, cortical atrophy in bilateral temporal lobes, and a marked bilateral decrease hippocampal volume, mainly involving the right side.
Conclusions:
Our findings suggest that prosopagnosia could be a predictive marker of atypical semantic dementia onset.
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