A case suspected of Alzheimer type dementia showing multimodal (face and voice) person recognition disorder from face and voice

A 90-year-old woman presented with a multimodal (face and voice) person recognition disorder. Although she had moderate general cognitive impairment, her visual capacity, other than face recognition, was well preserved. She could identify the faces voices of family members but not recall names relatives whom met infrequently, famous individuals, or medical staff. remember first some information about prominent individuals when supplied their surnames. Therefore, we thought that person-specific semantic memory intact unable to access it through voices. MRI revealed predominantly right-sided bilateral anterior temporal lobe hippocampal atrophy. SPECT images showed decreased blood flow in lobes inferior parietal lobule (heavily right-sided), right posterior cingulate gyrus, precuneus. Progressive disorder prosopagnosia has been considered variant frontotemporal lobar degeneration because abnormal behaviors psychiatric symptoms frequently coexist. However, no such were observed this case, therefore suspected dementia Alzheimer type.