So when people suffer from amnesia, it doesn't usually affect semantic memory but certain forms of dementia can affect it. In Alzheimer's disease, for example, patients can find it increasingly ...

early-stage vascular dementia often involves difficulty with: Memory (problems recalling recent events, often mild) Language (speech may become less fluent, for instance) Visuospatial skills ...

But dementia isn’t a normal part of aging—it’s a progressive loss of memory, language ... Other types include vascular dementia, when heart disease or small strokes impair blood flow ...