Dementia with Lewy bodies is untreatable.
 Limbic-predominant age-related TDP-43 encephalopathy (LATE) is a type of dementia that primarily affects people in their 80s or 90s and in which TDP-43 protein deposits in the limbic portion of the brain
 Most types of dementia are slowly progressive with some deterioration of the brain well established before signs of the disorder become apparent

