Early onset dementia is dementia in which symptoms first appear before the age of 65.[1] The term favored until about 2000 was presenile dementia; young onset dementia is also used.[2]

Early onset dementia may be caused by degenerative or vascular disease, or it may be due to other causes, such as alcohol-related dementia and other inflammatory or infectious processes.[1] Early-onset Alzheimer's disease, vascular dementia and frontotemporal lobar degeneration are the most common forms of early onset dementia, with Alzheimer's accounting for between 30 and 40%.[1] Early onset dementia may also occur, less frequently, in the Lewy body dementias (dementia with Lewy bodies and Parkinson's disease dementia), multiple sclerosis, Huntington's disease and other conditions.[2]

References

  1. ^ a b c Quach C, Hommet C, Mondon K, Lauvin MA, Cazals X, Cottier JP (April 2014). "Early-onset dementias: Specific etiologies and contribution of MRI". Diagn Interv Imaging (Review). 95 (4): 377–98. doi:10.1016/j.diii.2013.07.009. PMID 24007775.
  2. ^ a b Rossor MN, Fox NC, Mummery CJ, Schott JM, Warren JD (August 2010). "The diagnosis of young-onset dementia". Lancet Neurol (Review). 9 (8): 793–806. doi:10.1016/S1474-4422(10)70159-9. PMC 2947856. PMID 20650401.

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