What is Lewy body dementia? In collaboration with The Lewy Body Society, our Admiral Nurses have put together this information to give a deeper understanding into this type of dementia. 👉 Lewy body dementia is an umbrella term for two types of dementia: dementia with Lewy bodies and Parkinson’s disease dementia 👉 Lewy body dementia is thought to make up 10-15% of dementia diagnoses in the UK 👉 Although often mistaken for Alzheimer’s, it is different in that it can affect the person’s movement