What is the difference between Alzheimer’s and dementia?

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The terms “Alzheimer’s” and “dementia” are often used interchangeably, which can create confusion for those seeking to understand these conditions. While both involve cognitive decline, it is essential to recognize that they are not the same thing.

While Alzheimer’s disease is a sub-type of dementia, the term dementia isn’t a particular name of a disease but it comprises many other types of memory loss-related symptoms (types of dementia), such as vascular dementia, frontotemporal dementia, Lewy-Body Dementia (LBD) and so on. Think of cancer, unless we are told which type of cancer is being discussed we cannot know whether they are referring to blood cancer, lung cancer or anything like that. The same is the case with dementia, also.

This article aims to clarify the differences between Alzheimer’s and dementia, eliminate misconceptions, and promote a better understanding of these conditions.

What is Alzheimer’s Disease?

Alzheimer’s disease is a progressive brain disorder that affects memory, thinking, and behavior. It is the most common type of dementia, accounting for approximately 60-80% of all cases. Individuals with Alzheimer’s often experience memory loss, difficulty in problem-solving, confusion, and mood swings.

The exact cause of Alzheimer’s Disease is still not fully understood, but researchers believe that a combination of genetic, environmental, and lifestyle factors may contribute to its development. The hallmark characteristics of Alzheimer’s are the presence of abnormal protein deposits in the brain called amyloid plaques and tau tangles, which disrupt the communication between nerve cells and lead to their eventual death.

Common symptoms of Alzheimer’s Disease include memory loss (especially recent events or information), confusion with time or place, difficulties with problem-solving and decision-making, changes in mood or personality, and eventually impairments in daily functioning such as self-care or communication. These symptoms typically worsen over time as the disease progresses through different stages.

It is important to note that while age is a major risk factor for developing Alzheimer’s disease (typically appearing after the age of 65), there are cases of early-onset Alzheimer’s which can occur in individuals as young as their 30s or 40s.

Currently, there is no cure for Alzheimer’s Disease. Treatment approaches mainly focus on managing symptoms and improving quality of life through medication, cognitive therapy techniques, lifestyle modifications like regular exercise and a healthy diet, as well as support from healthcare professionals and caregivers.

What is Dementia?

Dementia is an umbrella term used to describe a range of cognitive impairments that hinder daily functioning. While Alzheimer’s is the most prevalent form of dementia, there are other types as well.

impaired memory can be a sign of dementia

Dementia is not a normal part of aging. It is caused by damage to or loss of nerve cells and their connections in the brain. This damage can be caused by a number of different diseases, including Alzheimer’s disease, vascular dementia, Parkinson’s disease, Lewy body dementia, and frontotemporal dementia.

The symptoms of dementia can vary depending on the underlying cause and the area of the brain that is damaged. However, some common symptoms include:

  • Memory loss
  • Difficulty thinking and reasoning
  • Problems with language
  • Changes in behavior
  • Difficulty with activities of daily living

Dementia is a progressive disease, meaning that it gets worse over time. There is no cure for dementia, but there are treatments that can help to manage the symptoms and improve quality of life. For this, it is very crucial to know about the early symptoms of dementia.

Key Differences Between Alzheimer’s and Dementia

There are several important differences to consider when trying to understand dementia and Alzheimer’s disease as distinct entities:

1. Onset and progression: Alzheimer’s disease is a neurological condition that affects the brain and its functions. It is a progressive disease, which means that its symptoms worsen over time. The onset of Alzheimer’s disease is usually slow and gradual, and the symptoms tend to develop gradually over a period of several years. In the early stages of the disease, people may experience mild cognitive impairment, which can affect their memory, reasoning, and decision-making abilities.

As the disease progresses, the cognitive decline becomes more severe and affects the person’s ability to perform daily activities. The decline in cognitive abilities in Alzheimer’s disease tends to follow a continuous and predictable pattern.

On the other hand, other types of dementia may have a more sudden or varied trajectory, depending on the underlying cause. For example, vascular dementia, which is caused by a disruption in blood flow to the brain, may result in sudden changes in cognitive abilities. Dementia with Lewy bodies, which is caused by abnormal protein deposits in the brain, may cause fluctuations in cognitive abilities and lead to visual hallucinations.

It is important to note that the symptoms of dementia can vary widely depending on the individual and the underlying cause of the disease. In any case, it is important to seek medical attention if you or someone you know is experiencing cognitive impairment or other symptoms of dementia.

2. Underlying causes and brain changes: Alzheimer’s disease is characterized by the accumulation of abnormal proteins, including amyloid plaques and neurofibrillary tangles, which gradually build up and interfere with the normal functioning of brain cells.

These protein deposits result in the death of brain cells and the loss of connections between neurons, leading to the characteristic symptoms of Alzheimer’s disease.

Elderly man staring out of the window, deep in thought.

While other types of dementia may arise from conditions such as strokes, Parkinson’s disease, or the accumulation of different types of abnormal proteins, Alzheimer’s disease specifically involves the buildup of these two types of protein deposits.

Additionally, Alzheimer’s disease is often accompanied by inflammation in the brain, which can further contribute to the damage and loss of brain cells. Despite ongoing research into potential treatments, there is currently no cure for Alzheimer’s disease, making early detection and management of symptoms critical for maintaining the quality of life for affected individuals and their families.

3. Prevalence and incidence: Alzheimer’s disease is the most prevalent form of dementia, accounting for the majority of cases. However, other types of dementia, such as vascular dementia, may have a different prevalence or incidence rate. Understanding these differences is crucial for researchers and healthcare professionals to design appropriate interventions.

4. Treatment and care: For Alzheimer’s Disease (AD), there are specific medications approved by the FDA (such as Memantine (Namenda) that can temporarily improve symptoms and slow down the progression of the disease. However, these medications do not cure or stop the underlying progression of Alzheimer’s. For other types of dementia, treatment options may vary depending on the specific cause and symptoms.

Since dementia conditions progressively worsen over time, providing adequate support for caregivers is crucial. This includes education about the disease, access to resources such as support groups or respite care services, and assistance in managing everyday challenges associated with caregiving.

As dementia progresses to advanced stages, end-of-life care becomes necessary. It involves ensuring comfort measures like pain management while focusing on preserving dignity and providing emotional support to both patients and their families.


In conclusion, while Alzheimer’s disease falls under the umbrella term of dementia, it is important to acknowledge the distinctions between the two. Alzheimer’s disease is a specific form of dementia with a gradual onset, distinct brain changes, and high prevalence. Other types of dementia can have different underlying causes and require tailored treatments.

Increasing awareness and knowledge of these terms can aid both individuals directly affected by these conditions and their caregivers in seeking appropriate support and care. Let’s spread awareness and understanding of Alzheimer’s disease and dementia to enable more informed discussions and decision-making.

Additional Resources

Medications for Alzheimer’s Disease


Vascular Dementia

Comprehensive Review on Alzheimer’s Disease: Causes and Treatment

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Cherie Voise

Cherie Voise, inspired by personal experiences and driven by her role as an advocate, founded Voise Foundation to improve the lives of those with dementia. As the foundation's key content creator and blog author, she draws on her deep understanding of the disease, advocating for respect, dignity, and creative therapy avenues such as VST Music© and other programs. Cherie's heartfelt writings, fueled by empathy, resonate with readers, offering insight and stirring action. Become a part of this journey and together with Cherie, let's make a meaningful impact in the world of dementia care.