DEAR MAYO CLINIC: What’s the difference between Lewy body dementia and Alzheimer’s? How is Lewy body dementia diagnosed? ANSWER: Doctors diagnose Lewy body dementia based on the range of symptoms a person shows. Generally, a Lewy body dementia diagnosis requires an ongoing decline in thinking skills, along with two of the following: visual hallucinations, Parkinsonism or fluctuating … Continue reading Mayo Clinic Q and A: Lewy body dementia and Alzheimer’s disease — what’s the difference?