Psychiatric-onset prodromal dementia with Lewy bodies (DLBs) is a recently proposed clinical entity characterized by psychiatric presentation that may predate clinical dementia by many years. It is not yet clear how to identify patients with prominent late-onset psychiatric symptoms who may have underlying Lewy body disease. In this article, we describe how neuroimaging can assist in the identification of this condition.
Prodromal DLB is an emerging concept. Biomarkers have not been yet established. We propose that nuclear imaging and advanced MRI technics showing posterior hypoperfusion and the presence of the “cingulate island sign” could be promising biomarker candidates.