The single most common confusion in dementia caregiving is the relationship between dementia and Alzheimer's. The two words are used interchangeably in everyday conversation and even in some medical settings. They are not the same thing. The distinction matters because it changes what your loved one actually has, what to expect, and what helps.
Dementia is the umbrella term, not a specific disease
Dementia is a syndrome, which means a pattern of symptoms, not a single disease. The symptoms include memory loss, language difficulty, impaired reasoning, behavioral changes, and gradually the loss of the ability to perform daily activities. Many different diseases can produce these symptoms. Alzheimer's is the most common of those diseases, but it is not the only one.
A useful comparison is "fever." Fever is a symptom that can be caused by dozens of different diseases. You would not say "someone has fever disease." You would say someone has the flu, or pneumonia, or an infection, that is causing the fever. Dementia works the same way. Someone has Alzheimer's disease, or vascular dementia, or Lewy body dementia, that is causing the dementia symptoms.
This distinction matters because the underlying disease determines what care patterns work, what progression to expect, and what medications may help.
Every person with Alzheimer's has dementia. Not every person with dementia has Alzheimer's. The 20 to 40 percent of dementia cases with a different underlying cause have a different progression, different care needs, and different resources that apply to them.
Alzheimer's disease specifically
Alzheimer's disease is a specific neurodegenerative disease characterized by the buildup of two proteins in the brain, beta amyloid and tau, that damage and eventually destroy brain cells. The damage typically starts in the hippocampus, which is central to forming new memories, which is why short-term memory loss is the classic early symptom.
Alzheimer's accounts for approximately 60 to 70 percent of all dementia cases globally. It is the disease most people picture when they hear the word "dementia." The progression typically spans 8 to 10 years from diagnosis, though wide individual variation exists. The classic stages move from short-term memory loss to longer-term memory loss, language and reasoning impairment, behavioral changes, and eventually the inability to perform basic functions.
If your loved one has been diagnosed with "Alzheimer's disease," they have a specific disease. If they have been diagnosed with "dementia," your next question to the doctor should be: what type of dementia? Because that answer changes everything that follows.
The other major types of dementia
There are dozens of dementia types, but five are common enough that most families will encounter one of them.
Other rarer types include Parkinson's disease dementia, Creutzfeldt-Jakob disease, Huntington's disease dementia, posterior cortical atrophy, primary progressive aphasia, and Korsakoff syndrome. Each has its own pattern.
My mother Sharon has FTD, which is why I wrote a guide to FTD and phone calls. The phone call patterns in FTD differ from the Alzheimer's pattern in clinically specific ways. General Alzheimer's resources often do not apply, and FTD families can spend months looking for guidance that actually fits their situation.
Why the distinction matters for care decisions
Five reasons the specific diagnosis changes care.
Expected progression. Alzheimer's progresses gradually over 8 to 10 years on average. Vascular dementia progresses in steps. Lewy body dementia can fluctuate dramatically day to day. FTD often progresses faster than Alzheimer's, especially in the behavioral variant. Knowing what to expect helps families plan financially, legally, and in terms of care arrangements.
Medication considerations. Cholinesterase inhibitors (donepezil, rivastigmine, galantamine) are often used in Alzheimer's. They are sometimes useful in Lewy body dementia. They are not first-line in vascular dementia or FTD. Antipsychotic medications, sometimes used for agitation in Alzheimer's, can be dangerous in Lewy body dementia. Medication decisions hinge on the specific type.
Communication patterns. Alzheimer's communication challenges typically center on memory and word retrieval. FTD can involve early personality changes and emotional dysregulation. Lewy body dementia can involve fluctuating awareness. Vascular dementia patterns vary by which brain regions were affected. Read more about how KindredMind approaches dementia communication across types. The communication strategies that work depend on the type.
Behavioral patterns. The phone calls, the wandering, the agitation, the paranoia, all manifest differently across types. Understanding why someone with dementia keeps calling looks different depending on whether the underlying disease is Alzheimer's or FTD. Care plans built for Alzheimer's may not transfer to FTD families.
Genetic counseling. Some dementia types have stronger genetic components than others. FTD in particular has well-documented genetic forms. Families navigating dementia should discuss whether genetic counseling is appropriate based on the specific diagnosis.
Why KindredMind works across types
KindredMind was built around the universal core of dementia care: the comfort of a familiar voice, validation rather than correction, simulated presence therapy as a clinical foundation, and the Alzheimer Society of Canada's communication guidelines. These approaches are validated across dementia types because the emotional need that drives the calls is shared.
What differs across dementia types is the personalization. A family caring for someone with FTD configures their KindredMind differently than a family caring for someone with Alzheimer's. The voice presence itself is the same technology. The knowledge base, the phrasing, the response patterns are tuned to the specific loved one. This is part of why KindredMind works for FTD families when generic Alzheimer's-focused tools do not. Learn more about the validation therapy approach that underpins KindredMind's responses.
The clinical foundation matters. A 2025 randomized controlled trial published in the International Journal of Neuroscience (PubMed 38646703) found significant reductions in agitation when people with dementia received familiar voice support compared to routine care alone. The study population spanned multiple dementia types because the underlying mechanism, separation anxiety relieved by a familiar voice, is shared across the syndrome. Read more about how AI fits into dementia care.
Your voice is the constant across every type of dementia.
KindredMind ensures they always reach it, in your voice, whenever they call.
Learn how KindredMind worksFAQ
My loved one's diagnosis is just "dementia." What do I do?
Ask the doctor for a specific diagnosis. "Dementia" alone is not a complete diagnosis. The specialist may say Alzheimer's, vascular dementia, mixed, FTD, or another type. If the diagnosis remains general, ask whether further testing, MRI, PET scan, or neuropsychological testing, is appropriate.
Are dementia and Alzheimer's treatable?
Some dementias are reversible, including those caused by medication side effects, vitamin deficiencies, thyroid problems, or normal pressure hydrocephalus. Most progressive dementias including Alzheimer's, FTD, Lewy body dementia, and vascular dementia are not currently curable. Some have treatments that can slow progression or manage symptoms. Discuss specifics with the care team.
Can someone have multiple types at once?
Yes. Mixed dementia is common, especially in older adults. The most common combination is Alzheimer's plus vascular dementia. Mixed dementia often progresses faster and can be more challenging to treat.
My loved one was diagnosed under age 65. Is that different from "regular" dementia?
Yes. Early-onset dementia (also called young-onset dementia) includes any dementia diagnosed under age 65. FTD is disproportionately common in this group. Early-onset dementia often involves additional considerations including work, finances, school-aged children, and earlier consideration of genetic factors.
