Dementia is a general term for a complex of symptoms: deterioration of memory, thinking, and the ability to live independently. Alzheimer's disease is one of the brain diseases that causes dementia, and the most common. Every person with progressive Alzheimer's disease develops dementia, but not all dementia is Alzheimer's disease. The difference is like the difference between "fever" and "flu": the former is a symptom, the latter is a specific cause.
To sum it up
- Dementia - is a set of symptoms (a broader concept), Alzheimer's disease — this is a specific neurodegenerative disease (a narrower concept).
- According to the WHO, Alzheimer's disease accounts for approximately 60–70% cases of dementia .
- Other causes of dementia include vascular dementia, Lewy body dementia, and frontotemporal dementia.
- Some dementia-like disorders have treatable causes, so it's a good idea to tell your doctor about any worrying memory problems.
What is dementia?
Dementia , also known as syndrome dementia , Dementia is a condition in which memory, thinking, and the ability to perform everyday activities gradually deteriorate. The World Health Organization (WHO) emphasizes that although dementia is more common after age 65, it is not a natural part of aging .
The Ministry of Health emphasizes that dementia is more than just "memory disorders." It also includes problems with attention, speech, and orientation in time and space, and over time, it impacts mood, behavior, and independence. However, the word "dementia" itself doesn't indicate that , which damage occurs in the brain - it's like diagnosing "stomach pain" without determining the cause.
What is Alzheimer's disease?
Alzheimer's disease - is a progressive neurodegenerative disease of the brain in which nerve cells gradually die off. This the most common cause of dementia — according to WHO, it accounts for 60–70% cases, while the Ministry of Health estimates this figure at 60–65%.
A typical initial symptom is difficulty remembering new information and recent events with relatively preserved memory of the past. Over time, difficulties with word finding, planning, spatial orientation, and performing everyday activities develop. The disease progresses slowly, usually over several years, and is currently incurable. Treatment alleviates symptoms and provides support to the patient and caregivers.
Dementia and Alzheimer's disease – what's the difference?
The connection between these concepts is simple: Dementia is a category, and Alzheimer's disease is one of its types. . When we say "grandma has dementia," we're describing visible symptoms—forgetfulness, disorientation, behavioral changes. When we say "grandma has Alzheimer's," we're specifying the cause of these symptoms, as determined by a doctor.
This distinction has practical implications. Different types of dementia have different progression, different initial symptoms and different recommendations for treatment and care . Therefore, simply saying «it’s dementia» is not enough – it is important to determine its cause.
| Characteristic | Dementia | Alzheimer's disease |
|---|---|---|
| What's happened | A set of symptoms | specific brain disease |
| Scope of the concept | Broad coverage – includes many diseases. | Narrowing of the intestinal lumen is one of the causes of dementia. |
| Reasons | Miscellaneous: neurodegenerative, vascular and other diseases | Neurodegenerative process in the brain |
| Participation in affairs | 100% (this is the name of the whole group) | Approximately 60–70% cases of dementia (WHO) |
| Typical beginning | It depends on the reason. | The most common problems with remembering new information |
| Well | It depends on the reason. | Slowly, gradually |
| Care | It depends on the reason. | Symptomatic course - there is no cause-and-effect treatment leading to a cure. |
Types of dementia other than Alzheimer's disease
The WHO lists several other common forms of dementia besides Alzheimer's disease. Their symptoms can overlap, and two causes can coexist in the same person (called mixed dementia).
- Vascular dementia – a disorder associated with impaired blood circulation in the brain, such as after a stroke. Symptoms can develop suddenly, and often the most noticeable are slowed thinking and difficulty planning, rather than memory itself.
- Dementia with Lewy bodies may present with fluctuations in mental activity throughout the day, visual hallucinations, and motor symptoms reminiscent of Parkinson's disease.
- Frontotemporal dementia – often begins with changes in personality, behavior, or speech, and only later affects memory.
Can dementia be reversible?
Symptoms that are strikingly similar to those of dementia may have treatable causes. These include vitamin B12 deficiency , thyroid dysfunction, depression (so-called pseudodementia), normal-pressure hydrocephalus, or medication side effects. After treating the underlying cause, mental abilities may improve. Alzheimer's disease and other neurodegenerative diseases do not fall into this category—they are progressive diseases.
How to recognize the first symptoms and what to do?
The Ministry of Health lists signs that should prompt a visit to the doctor. It's worth paying attention if someone you know exhibits the following symptoms:
- Forgets recent events and conversations, asks the same questions over and over again.
- has difficulty performing everyday activities that she previously performed without any problems.
- loses words, confuses names, loses the thread of the conversation.
- gets confused in time and space, gets lost in familiar surroundings.
- loses control over finances.
- Mood changes – irritability, apathy, and isolation appear.
The first step is visit to the family doctor , who will conduct an initial examination and, if necessary, refer the patient to neurologist , to a psychiatrist Or to a memory clinic. Diagnosis typically includes a conversation with the patient and their loved ones, memory and thinking tests (neuropsychological assessment), blood tests to rule out reversible causes, and—at the doctor's discretion—brain imaging. Only then can a diagnosis of Alzheimer's disease or another form of dementia be made.
There's no point in waiting for symptoms to "go away on their own" or attributing them to age. Early diagnosis allows us to rule out treatable causes, initiate symptomatic treatment, and plan further care. This article is for informational purposes only and does not replace a doctor's consultation .
Frequently Asked Questions (FAQ)
What is the difference between dementia and Alzheimer's disease?
Dementia is a collection of symptoms that includes deterioration of memory, thinking, and daily functioning. Alzheimer's disease is a specific brain disorder and the most common cause of dementia. Alzheimer's disease always leads to dementia, but dementia can have other causes as well.
Are dementia and dementia the same thing?
Yes. "Otęnie" is a Polish medical term, and "dementia" is its Latin equivalent. Both words describe the same set of symptoms.
Is senile dementia Alzheimer's disease?
Not necessarily. "Senile dementia" is a colloquial term for dementia in older adults. Alzheimer's disease is the most common cause, but it can also be caused by vascular dementia or dementia with Lewy bodies. This is determined by a medical diagnosis.
Is dementia a natural symptom of aging?
No. The WHO emphasizes that dementia is more common in people over 65, but it is not an inevitable part of aging. Many people experience minor difficulties remembering names, but dementia interferes with daily life.
Can Alzheimer's disease be cured?
There is currently no cure for Alzheimer's disease. Available treatments—medications and non-medication options—can alleviate symptoms and improve quality of life. The choice of treatment method is up to the doctor.
See also
- What is the difference between a psychologist and a psychiatrist?
- What is the difference between a stroke and a hemorrhage?
- What is the difference between asthma and COPD?
- What is the difference between HIV and AIDS?