Semantic dementia
Semantic dementia
Definition
Semantic dementia (SD) is a form of frontotemporal dementia (FTD), characterized by the progressive, amodal and profound loss of semantic knowledge (combination of visual associative agnosia, anomia, surface dyslexia or dysgraphia and disrupted comprehension of word meaning) and behavioral abnormalities, attributable to the degeneration of the anterior temporal lobes.
Also known as dementia, frontotemporal, dementia, frontotemporal, with or without parkinsonism, semantic primary progressive aphasia, semantic variant PPA — per MONDO