Non-amnestic Alzheimer disease dementia, visuospatial variant (Q96047)

Clinical variant of Alzheimer disease dementia presenting with predominant visual perception and/or visuospatial deficits with intact primary visual function. Clinical features include elements of Balint’s syndrome (optic ataxia, ocular apraxia and simultagnosia) associated or not with Gerstmann’s syndrome (acalculia, agraphia, left–right disorientation and finger agnosia) Episodic memory is proportionally less impaired. There is prominent atrophy in the posterior cortical regions on magnetic resonance and hypometabolism on FDG-PET examination.