Dementia vs. Alzheimer's: They're Not the Same Word

We hear these two terms used interchangeably all the time, and it's an honest mix-up — but the distinction actually matters for understanding what's ahead for your family.

The Short Version

Dementia is an umbrella term for a group of symptoms — decline in memory, thinking, reasoning, or other cognitive function serious enough to interfere with daily life. It's not a single disease. Alzheimer's disease is the most common underlying cause of those symptoms, but it's not the only one.

What Else Falls Under "Dementia"

Alongside Alzheimer's, the other common causes include:

• Vascular dementia — caused by reduced blood flow to the brain, often after a stroke or a series of smaller ones. We've written a separate guide to vascular dementia specifically.
• Lewy body dementia — involves abnormal protein deposits affecting the brain's chemical messengers, often with more prominent movement symptoms and visual hallucinations than typical Alzheimer's.
• Frontotemporal dementia — affects the frontal and temporal lobes specifically, often showing up first as personality or language changes rather than memory loss. We've written a separate guide to frontotemporal dementia as well.
• Mixed dementia — more than one type happening at once, most commonly Alzheimer's combined with vascular dementia.

Why the Distinction Actually Matters

Different causes of dementia can progress differently, respond differently to treatment, and come with different early warning signs. Alzheimer's typically starts with memory loss first. Frontotemporal dementia often starts with personality or language changes instead, sometimes with memory staying relatively intact early on. Vascular dementia can progress in a step-like pattern — periods of stability followed by sudden decline — rather than the more gradual slide typical of Alzheimer's. Knowing which type you're dealing with helps a doctor set realistic expectations and helps you know what to actually watch for next.

You Don't Need to Diagnose This Yourself

This is genuinely a job for a neurologist or geriatric specialist, not something to work out from a symptom checklist at home. If your loved one hasn't had a formal evaluation yet, that's the right next step before assuming which type of dementia is involved.

How Interim Fits In

We're a non-medical home care agency, and the specific type of dementia someone has changes how we approach day-to-day care — the redirection techniques that work well for Alzheimer's-related confusion aren't always the same ones that work for frontotemporal-related behavior changes. We tailor our approach to the person, not a one-size-fits-all dementia playbook.

Our 7th Week Guarantee

No long contracts. If you don't feel the difference after six weeks of care at 20 or more hours a week, your seventh week is free.

Get Started

Call us at (801) 401-3515 and tell us what you're seeing. We'll talk through what kind of support makes sense for your specific situation.

Learn more about our dementia care services, or read our guides to vascular dementia and frontotemporal dementia specifically.