•Pathological basis of primary progressive aphasia is heterogeneous.•Logopenic primary progressive aphasia can precede dementia with Lewy bodies (DLB).•Cholinesterase inhibitor can improve logopenic aphasia with DLB.
Keywords: Alzheimer's disease; Cholinesterase inhibitor; Lewy body disease; Logopenic aphasia; Primary progressive aphasia.
© 2020 The Author(s).