Another cause of dementia is Lewy Body Disease, Dementia of the Lewy Body type, Dementia with Lewy Bodies. The main pathological feature of this disease is the presence of abnormal protein inclusion called the Lewy Body. This round structure is also the main pathological feature of Parkinson’s disease and we think that Parkinson’s and Lewy Body Dementia are related to each other. Some of the clinical features of Lewy Body Dementia may include motor problems you would see in Parkinson’s such as tremor.
Similarly if you have Parkinson’s disease for a long time, you may develop cognitive issues that are very similar to what you would see in Lewy Body Dementia. Inside the brains of people with Lewy Body Dementia, you’ll often see amyloid plaques and this probably speaks to some kind of a relationship between Lewy Body Dementia and Alzheimer’s Disease.