how did lewy body dementia get its name
Kenji Kosaka
Dementia with Lewy bodies
Kosaka first proposed the term "Lewy body disease" four years later, based on 20 autopsied cases. 
wiki:11711988
Dementia with Lewy bodies [SEP] History
With Japanese, UK, and US researchers finding in the 1990s that DLB was a common dementia, there were nonetheless no diagnostic guidelines, and each group was using different terminology. The different groups of researchers began to realize that a collaborative approach was needed if research was to advance. The DLB Consortium was established, and in 1996, the term "dementia with Lewy bodies" was agreed upon and the first criteria for diagnosing DLB were elaborated.