Recent insights into Early Onset Dementia (EOD): A Review

The present study aims to review the prevalence and etiology of Early Onset Dementia (EOD) reflected in the population based studies worldwide .For this purpose, Bibliographic database searches and rigorous literature review were performed using the following keywords namely: “Dementia”, “Early onset dementia”, “Alzheimer’s disease” and “Senile Dementia” from the following databases: Pubmed, Medline between the years 2005 to 2019. The summary of report findings suggest that the prevalence of early onset dementia is reported to occur in 3-5% of the Indian population among predisposed individuals. This is an attempt to accumulate and collate in one spot all sort of multifactorial associations behind the pathogenesis of EOD in youth. These causes are Genetic change, Brain comorbidities, Alzheimer's ailment, vascular complications and increasingly other neuropsychiatric complications. We have made an attempt to analyze the pathogenesis of the early onset dementia in relation to their outcomes and a few manifestations which demonstrate the same. Future large-scale systematic reviews and network meta-analysis in this domain would facilitate dissemination of credible information with regards to the causative mechanism and possible therapeutic interventions and viable alternatives to possibly tackle and mitigate EOD. Keywords:  Dementia, Early onset dementia, Alzheimer’s disease, Genetic alterations.