What is the difference between dementia and Alzheimer's?
- Ari Manor
- Dr. Nati Blum
- No comments
What is the difference between the terms, what types of dementia exist, and when is it important to seek professional diagnosis?
Many of us use the words "dementia" and "Alzheimer's" as if they were the same thing. Some people will say, "Mom has a little Alzheimer's," even without having undergone a proper diagnosis, and others will receive an answer from a doctor that "she has dementia," without understanding exactly what is behind the diagnosis. The confusion is understandable – these are complex medical terms – but it is important to get things in order: to understand what dementia is, what Alzheimer's disease is, what the difference is between them, and when it is worth seeking a diagnosis and getting help.
What is dementia?
"dementia"It is not one disease, but Name of syndrome: A persistent decline in thinking abilities (memory, judgment, language, orientation, planning, etc.) to the extent that it interferes with daily functioning – work, managing finances, organizing the home, social relationships.
Dementia is caused by various diseases that damage the brain – some are degenerative (gradual wear and tear of nerve cells), some are vascular (damage to blood vessels), and some are a combination of several factors.
What is Alzheimer's disease?
Alzheimer's is the most common disease that causes dementia. – About 60–70% of dementia cases.
This is a degenerative brain disease in which abnormal proteins (amyloid and tau) accumulate and gradually damage nerve cells. It usually begins:
- Decreased short-term memory (meetings, conversations, where objects are placed)
- Difficulty in time and place orientation
- Difficulty finding words and slowing down thinking
The deterioration is slow and gradual : over the years, difficulties in daily functioning, behavior, and physical functioning are added.
So what exactly is the difference?
You can think of it this way:
- Dementia = name of the syndrome
- Alzheimer's = name of one of the diseases that causes this syndrome.
Similar to "headaches" (syndrome) that can result from migraine, high blood pressure, or dehydration - so "dementia" can be caused by Alzheimer's, vascular dementia, dementia with Lewy bodies, and more.
What other types of dementia are there?
except Alzheimer's diseaseThere are other common types:
- Vascular dementia – Caused by damage to blood vessels in the brain (overt stroke or “micro-strokes”). Sometimes appears “in attacks” – worsening followed by stabilization.
- Dementia with Lewy bodies (DLB) – Combines cognitive decline with sharp fluctuations in alertness, visual hallucinations, and parkinsonism.
- Frontotemporal dementia (FTD) – Usually begins at a younger age (50–65), and is manifested by sharp personality changes, lack of inhibitions, or changes in language, sometimes preceded by memory problems.
- Parkinson's dementia, Mixed dementia (combination of vascular Alzheimer's), and more.
Main symptoms – what is similar and what is different?
All dementias have a "common core": decline in memory, planning, judgment and organization, changes in mood and behavior.
But there are also different emphases:
- Alzheimer's disease – Short-term memory and mild confusion are often the first.
- Vascular dementia – Sometimes more difficulty walking, "heavy" gait, mental slowing.
- Dementia with Lewy bodies (DLB) – fluctuations in consciousness, falls, early visual hallucinations.
- Frontotemporal dementia (FTD) – personality change, lack of tact, compulsive eating, or changes in language at the beginning.
How is dementia in general and Alzheimer's in particular diagnosed?
The diagnosis is made in several layers:
- Conversation and clinical examination – With the person and with a family member: when did the decline begin, what it manifests itself in, underlying illnesses and medications.
- Cognitive tests – For example, MMSE or MoCA, which test memory, attention, language, and more.
- blood tests – Rule out reversible causes (B12 deficiency, hypothyroidism, infections, anemia, etc.).
- Brain imaging (CT/MRI) – To see damage from stroke, tumor, hydrocephalus, and the patterns of degeneration characteristic of different types of dementia. For example:
- In the disease Alzheimer's Shrinkage is often seen in the inner regions of the temporal lobes (memory areas) and also in the parietal lobes (orientation and complex functions).
- In dementia Frontotemporal (FTD) mainly sees shrinkage of the frontal lobes, which are responsible for behavior, judgment, and impulse control.
- In dementia Vascular Multiple lesions are seen in the blood vessels in the brain.
- In some cases – Advanced testing (PET for amyloid/tau, lumbar puncture, or genetic testing) – mainly in designated centers and in unusual situations.
The initial diagnosis can be made by a trained family doctor , but an evaluation by a neurologist, psycho-geriatrician, geriatrician, or memory clinic is usually required.
How do you know if it's Alzheimer's or another type of dementia?
There is usually no single "magic test", but Assembling a puzzle:
- The onset (very slow? sudden after a stroke?)
- Which symptom appeared first (memory? personality change? visual hallucinations?)
- Imaging findings and other tests
Even so, many people have "mixed dementia" – for example, Alzheimer's along with blood vessel damage – so it is more important to understand What is the person's condition and what does he need? Than fighting over just an exact name.
Is this even dementia – or something else?
Not all memory loss is dementia. There are other conditions:
- MCI Mild cognitive decline: Measurable difficulty with memory, but almost normal daily functioning.
- Depression, anxiety, chronic stress ("pseudo-dementia").
- דליריום – Acute confusion, usually due to infection, medication, or dehydration.
- Hearing/vision problems, sleep disorders, nutritional deficiencies, and more.
Therefore, it is important to diagnose – some of the reasons Reversible or significantly improveable.
Why is dementia and Alzheimer's confused?
- Because Alzheimer's is the most common type, the word "Alzheimer's" has sometimes become synonymous with all dementia.
- Because in the media, terms are sometimes used interchangeably.
- Because both family members and professionals tend to shorten it: "He has Alzheimer's," even when an exact distinction has not been made.
What to do when you experience cognitive decline?
- Don't ignore, but don't panic either..
- Write down concrete examples (dates, events) of forgetfulness or confusion.
- Contact your family doctor and request a proper examination - it is advisable to come with a companion.
- Ask about referrals to a memory clinic/specialist and about blood tests and imaging.
- At the same time, reinforce a healthy lifestyle: physical activity, nutrition (Mediterranean diet), sleep, social connections, and cognitive activation.
- Contact the EMDA Association – Receive information, guidance and support groups. EMDA Association is at your service on the support and advice line *8889 – free of charge.
Summary
Ultimately, the main difference is that the term "dementia"Refers to a variety of different diseases involving cognitive decline, and Alzheimer's disease Alzheimer's It is just one of these diseases, the most common of them. The precise distinction between the different types of dementia is important for doctors in order to tailor treatment and follow-up, but for the family, the critical point is not to be left alone with the signs of cognitive decline, and to seek professional diagnosis (to the family doctor and subsequently according to his recommendations) and support as soon as possible.
The authors of the article
Ari Manor He is the CEO of the consulting firm ZOOZ, Strategy and Marketing Manager atEMDA Association and an expert in strategy, marketing, AI and innovation. He holds a Master's degree (M.Sc) in human genetics, as part of the Interdisciplinary Excellence Track at Tel Aviv University. As a serial entrepreneur, Ari has founded several impact projects for the benefit of the public, including Social psychometric in Israel, and the CureFacts project, which makes scientific information about medical treatments accessible to the general public in the US.
Dr. Nati Blum is the CEO of EMDA and holds a PhD in psychology from the University of Sacramento. Her doctoral thesis focused on face-to-face group therapy versus virtual group therapy. In her role at EMDA, she harnesses her professional and managerial experience to lead efforts to improve the quality of life of those dealing with dementia, promote their rights, and raise public awareness of the phenomenon in Israel.