Check out this handy infographic on Lewy body dementia (LBD) from the National Library of Medicine (part of NIH).
It shows how LBD affects our brains and causes symptoms:
The NIH says:
Lewy body dementia (LBD) is a complicated memory and movement disease affecting more than 1 million Americans. There are two types: dementia with Lewy bodies and Parkinson’s disease dementia. The main difference between the two is when the start of thinking and movement symptoms occur.”