TIME | Here's What to Know About Lewy Body Dementia TIME Lewy body dementia (LBD) has symptoms that often include changes in thinking, problem solving, memory and movement. It's the second most common type of dementia, after Alzheimer's disease, and accounts for about 20% of all cases of dementia. Robin Williams' Suicide: What Is Lewy Body Dementia? Robin Williams' widow says actor had dementia before suicide Robin Williams suffered from Lewy body dementia, a brain disorder thought to ... |