In the past, using the terms "Alzheimer’s disease" and "dementia" interchangeably was a generally accepted practice. Now there is rising appreciation that a variety of diseases and disease processes contribute to dementia. This week on Dr. Greg Davis on Medicine the host talks with Dr. Pete Nelson, of the department of pathology and laboratory medicine at UK. He recently co-chaired an international workgroup that characterized another form of dementia, known as LATE.