I avoided this post for awhile because existing online resources cover it pretty thoroughly: “What’s the difference between ‘Alzheimer’s disease’ and ‘dementia’?”
But I noticed that many folks, sometimes even highly knowledgeable people, use the terms “dementia” and “Alzheimer’s disease” interchangeably…incorrectly. So here are some quick definitions (just to be sure that you’re speaking the same language as your peers, care team, or staff).
Dementia is a cluster of signs and symptoms involving the loss of cognitive ability.
Symptoms of dementia can result from a number of different diseases; Alzheimer’s disease is one of many diseases that can cause dementia.
In addition to Alzheimer’s disease, other forms of dementia include:
- vascular dementia (often resulting from a stroke)
- frontotemporal dementia
- dementia with Lewy bodies
- Creutzfeldt-Jakob disease
- Parkinson’s disease
- Mild Cognitive Impairment*
- and more…
This gets mixed-up for a number of reasons:
- First of all, it seems that far more people know about Alzheimer’s disease than other forms of dementia. This is in-part because the bulk of diagnosed dementia is Alzheimer’s disease (50-70%, depending on your source). It makes sense that we’d mistakenly use “Alzheimer’s disease” and “dementia” to mean the same thing.
- Clusters of symptoms suggesting any particular form of dementia tend to overlap. A lot. And an accurate diagnosis isn’t ensured without cutting into the brain.
Diagnoses based on “symptomatology” are, at best, statements that we should think of starting with “It’s highly probable that she has….” and not “She has…” - Some people exhibit two (or more!) types of dementia at the same time. As far as we know, no type of dementia protects against any other types.
MySimpleC.com 