What is Lewy Body Dementia (LBD)?

By Team Beller | dementia

Feb 10

Lewy body dementia (LBD) is one of the three most prevalent forms of dementia, inflicting over 1.3 million Americans. 

What is Lewy Body Dementia (LBD)?

Lewy body dementia (LBD) results when Lewy body protein (alpha-synucleins) cumulates in brain cells. As with protein associated with other dementias, researchers believe alpha-synucleins serve an important purpose until they stockpile inside and damage neurons. 

Lewy body dementia takes two forms:

  1. Dementia with Lewy bodies (DLB).
  2. Parkinson's disease with dementia (PDD).

The primary difference between the two is how they begin. DLB begins with dementia whereas PDD starts with Parkinson's disease. 


To learn more, please refer to Lewy Body Dementia (LBD) and the other books in our Dementia Types, Risk Factors, Symptoms, Diagnosis, Stages, and Prevention Series. 

Dementia Series

Books 1-4

Dementia Overview, book 1 is an introduction to all 14 dementias. 

Behavioral Variant Dementia (bvFTD), book 2  concentrates on the most prevalent frontotemporal dementia.

Primary Progressive Aphasia (PPA), book 3  is a frontotemporal dementia that attacks language skills.

Dementia with Lewy Bodies, book 4 investigates the most prevalent Lewy body dementia sub type. 

Books 5-8

Parkinson's Disease Dementia (PDD), book 5  is a Lewy body dementia that begins as Parkinson's disease. 

Huntington's Disease, book 6 focuses on a less frequent but no less dangerous dementia.

Normal Pressure Hydrocephalus, book 7 is a dementia that strikes all ages.

Wernicke-Korsakoff Syndrome, book 8 is an avoidable dementia.

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