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- Glossary Term -

Lewy Body Dementia

Lewy body dementia, also known as dementia with Lewy bodies, is the second most common
type of progressive dementia after Alzheimer’s disease dementia. Protein deposits, called Lewy
bodies, develop in nerve cells in the brain regions involved in thinking, memory and movement
(motor control).
Lewy body dementia causes a progressive decline in mental abilities. People with Lewy body
dementia may experience visual hallucinations and changes in alertness and attention. Other
effects include Parkinson’s disease-like signs and symptoms such as rigid muscles, slow
movement and tremors. (Mayo Clinic)

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