Thelansis

  Semantic dementia (SD) is a form of frontotemporal dementia 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. Typically presenting as a progressive, fluent anomic aphasia, SD is the paradigmatic disorder of semantic memory with a characteristic anatomical profile of asymmetric, selective anteroinferior temporal lobe atrophy. The earliest and most common symptom of SD is a reduction in expressive vocabulary, commonly referred to as a "loss of memory for words." Despite non-specific memory impairment, patients with SD typically exhibit relatively normal memory for recent day-to-day events and topographical aspects of memory, unlike early Alzheimer's disease. The differential diagnosis of SD includes other forms of Prima...

 Semantic dementia (SD) is a type of frontotemporal dementia characterized by the progressive, amodal and profound loss of semantic knowledge (combination of visual, anomia, associative agnosia, surface dyslexia or dysgraphia and disrupted comprehension of word meaning) and behavioral abnormalities, attributable to the degeneration of the anterior temporal lobes. Typically presenting as a progressive, fluent anomic aphasia, SD is the paradigmatic disorder of semantic memory with a characteristic anatomical profile of asymmetric, selective anteroinferior temporal lobe atrophy. The earliest and most common symptom of SD is a reduction in expressive vocabulary, commonly referred to as a "loss of memory for words". Despite non-specific memory impairment, patients with SD typically exhibit relatively normal memory for recent day-to-day events and topographical aspects of memory, unlike early Alzheimer's disease. The differential diagnosis of SD includes other forms of Primary ...