Alzheimer's vs. Dementia: What Houston Families Should Know

Most families use "Alzheimer's" and "dementia" interchangeably. They're not the same, and the distinction matters for care planning.

The clean definition

Dementia is the umbrella term for symptoms — memory loss, judgment change, functional decline — caused by any of several underlying diseases.

Alzheimer's disease is one specific cause of dementia. It's the most common (about 60–70% of dementia cases), but it's not the only one.

The other main types you'll hear about:

- Vascular dementia — caused by small strokes, often step-wise progression rather than smooth decline

- Lewy body dementia — hallucinations early, fluctuating cognition, sensitivity to certain medications

- Frontotemporal dementia — personality change and language problems can come before memory loss

- Mixed dementia — usually Alzheimer's plus vascular changes together

Why the distinction matters for care

Each type has different daily patterns. What works for Alzheimer's care doesn't always work for Lewy body:

- Alzheimer's: Progressive memory loss, gradual functional decline, sundowning is common. Care plan focuses on routine, cueing, and safety over years.

- Vascular dementia: Step-wise decline (a stroke = a step down, then a plateau). Care plan needs to be adjustable in response to the next event.

- Lewy body: Hallucinations and cognition fluctuations from hour to hour. Certain antipsychotic medications are dangerous. Care requires a caregiver who documents patterns for the neurologist.

- Frontotemporal: Personality changes and disinhibition can precede memory issues. Care planning is emotional as much as practical, and family coaching matters.

The other clinically important reason to know which type: certain medications are riskier or ineffective for certain dementias. Anticholinergic drugs and typical antipsychotics can be devastating in Lewy body specifically.

What to ask the neurologist

If you're taking a parent to their first neurology appointment in Houston (Methodist Neurological Institute, Baylor, UT Health, or elsewhere):

1. "What type of dementia do you believe this is, and what evidence supports that?"

2. "Are there any medications we should specifically avoid because of this diagnosis?"

3. "What symptom changes should trigger a call back to your office?"

4. "How often should we follow up, and what should we document between visits?"

The last one is where in-home caregiver observation becomes clinically useful — a caregiver in the home a few days a week can document patterns the neurologist can only sample at appointments. Our Care Manager coordinates that documentation format with your specific neurologist. [Read the case study](/case-studies/sundowning-observation-notes-neurologist-tanglewood/) of how that changed a Lewy body medication plan.

What Houston families should do today

If you're seeing the [early signs at home](/blog/signs-parent-needs-help-at-home-houston/) — memory changes, medication confusion, judgment shifts — start with a primary-care visit for a formal cognitive screening (MoCA or MMSE). Ask for referral to a memory specialist if the screening flags anything. The earlier the diagnosis, the better the medication timing and the more time you have to build a care team the client trusts.

For the practical daily care that starts once diagnosis is clear, our [dementia and Alzheimer's care service](/services/dementia-alzheimers-care/) is nurse-supervised and specifically trained in the distinct patterns of each dementia type.

*Andrew Harris, RN is co-owner and Clinical Director of Homewatch CareGivers of Houston Galleria. He was a Neuro ICU nurse at Houston Methodist Hospital.*