Determining Etiologic Diagnoses in Patients with Rapidly Progressive Dementia

Overlap in the presenting clinical features and test results in patients with rapidly progressive dementia (RPD) confounds the etiologic diagnoses of RPD, contributing to diagnostic delays, missed treatment opportunities, and poorer outcomes. There is a need to improve diagnostic accuracy in patients with RPD, with particular emphasis on identifying patients with potentially treatment‐responsive causes of RPD early in the symptomatic course.