Characteristics of Early-Onset Dementia in Chiba Prefecture, Japan: A Multicenter Survey.

Introduction: Early-onset dementia (EOD), defined as dementia onset before the age of 65 years, is relatively rare, but its social impacts are significant. This study aimed to characterize the diagnosis and clinical and social status of EOD subjects in the 11 dementia centers in Chiba Prefecture, Japan.

Methods: A retrospective 1-year survey was conducted.