The majority of<unk>  patients have ubiquitin-positive, TDP-43 positive, tau-negative inclusions, although other pathologies have been described more infrequently, namely tau-positive Pick's disease and Alzheimer's pathology. Of all the FTLD syndromes,<unk>  is least likely to run in families and is usually sporadic. Alzheimer's Disease and<unk>  Alzheimer's disease is related to<unk> , which both have similar symptoms. The main difference between the two being that Alzheimer's is categorized by atrophy to both sides of the brain while<unk>  is categorized by loss of brain tissue in the front portion of the left temporal lobe. With Alzheimer's disease in particular, interactions with<unk>  memory produce different patterns in deficits between patients and categories over time which is caused by distorted representations in the brain. For example, in the initial onset of Alzheimer's disease, patients have mild difficulty with the artifacts category. As the disease progresses, the category specific<unk>  deficits progress as well, and patients see a more concrete deficit with natural categories. In other words, the deficit tends to be worse with living things as opposed to non-living things.
Semantic dementia
Subcortical dementia
Vascular dementia
Lewy body dementias
Dementia with Lewy bodies
Frontotemporal dementia
Normal pressure hydrocephalus
Alcohol-related dementia