Dementia with Lewy bodies (
DLB), also known as
Lewy body dementia (
LBD),
diffuse Lewy body disease,
cortical Lewy body disease, and
senile dementia of Lewy type, is a type of progressive neurodegenerative
dementia closely associated with
Parkinson's disease primarily affecting older adults. Its primary feature is cognitive decline, which can lead to hallucinations, as well as varied attention and alertness when compared to a person's baseline function.