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Alzheimer's vs. Dementia: What's the Difference?


Alzheimers vs dementia - elderly lady holding hands

If you’ve ever been confused by the terms Alzheimer’s and dementia, you’re not alone. These words are often used interchangeably as if they mean the same thing, but they actually don’t. Knowing the difference between them can make a world of difference, especially if you or someone you love is facing memory loss or cognitive changes. So, let’s dive in and break it down in a way that’s easy to understand.


Dementia: A Broad Term for Cognitive Decline


Think of dementia as a big umbrella. It’s a general term that covers a range of symptoms like memory loss, confusion, trouble thinking clearly, and difficulty with everyday tasks. Dementia isn’t one specific illness - it’s more of a way to describe what happens when our brains start to struggle with certain tasks. And yes, it tends to get worse over time, which can be tough for both the person experiencing it and their loved ones.


Different Types of Dementia


Now, under that big dementia umbrella, there are different types, each with their own causes and symptoms:


  • Vascular dementia - This can happen after strokes or when blood flow to the brain is compromised.

  • Lewy body dementia - Linked to abnormal protein deposits in the brain, this can cause a mix of memory problems, hallucinations, and sleep disturbances.

  • Frontotemporal dementia - This affects behaviour, personality, and sometimes language, as it hits the frontal and temporal parts of the brain.

  • Mixed dementia - Sometimes, people have more than one type of dementia at the same time, like a combination of Alzheimer's and vascular dementia.


60 - 70% of dementia cases in the UK are due to alzheimers

Alzheimers: The Most Common Type of Dementia


Alzheimer’s disease is actually a specific illness, and it’s the most common type of dementia. In fact, about 60-70% of dementia cases in the UK are due to Alzheimer’s. It slowly damages the brain, making it harder and harder for someone to remember things, think clearly, or carry out daily activities. It’s caused by abnormal proteins - beta-amyloid plaques and tau tangles - that build up in the brain and damage nerve cells.


How Are They Different?


While dementia and Alzheimer’s are closely linked, it’s important to remember that they’re not the same thing. Here’s how to keep them straight:


  • Dementia is a Symptom, Alzheimers is a Disease

    Think of it this way: Dementia is the umbrella term for the symptoms, while Alzheimer’s is one specific disease that causes those symptoms. So, while all Alzheimer’s patients have dementia, not all people with dementia have Alzheimer’s.


  • Alzheimers is One Cause of Dementia

    There are several conditions that can lead to dementia, and Alzheimer’s is just one of them. Vascular dementia can happen after strokes, Lewy body dementia comes with hallucinations and movement issues, and so on. Each type has its own unique symptoms and course of progression.


  • Different Symptoms

    While memory loss is often the first sign of Alzheimer’s, other types of dementia can look a bit different. For example, vascular dementia might start with trouble solving problems or focusing, while Lewy body dementia could involve hallucinations or difficulty sleeping long before memory becomes an issue.


  • Progression

    Alzheimer’s tends to move along in a more predictable way, with symptoms gradually worsening over time. Other types of dementia, like vascular dementia, can progress in steps. A person might remain stable for a while and then experience a sudden decline after a stroke or another health event.


Why Does Understanding the Difference Matter?


It’s natural to feel a bit overwhelmed if you or someone you care about is dealing with memory loss or cognitive issues. Understanding whether it’s Alzheimer’s or another type of dementia, knowing what to expect and how to approach treatment can help empower you to deal with the future.


Treatment


While there’s no cure yet for Alzheimer’s or other types of dementia, knowing the specific diagnosis can help guide treatment. For example, medications like Acetylcholinesterase (AChE) inhibitors can help some people.  These medicines increase levels of acetylcholine, a substance in the brain that helps nerve cells communicate with each other, slow cognitive decline and improve symptoms. In contrast, someone with vascular dementia might benefit more from treatment focused on heart health and preventing strokes. 


Caregiving


If you’re caring for someone with dementia, understanding their diagnosis can help you know what to expect and how to best support them. You might find our recent blog ‘Communicating with someone with Dementia' useful. Alzheimer’s usually starts with memory issues, so caregivers might focus on reminders and routines. But if someone has frontotemporal dementia, their personality and behaviour may change first, which requires a different approach. Knowing what’s happening helps you plan ahead, both practically and emotionally. 


Planning for the Future


When dementia or Alzheimer’s is diagnosed, it can feel like your world has been turned upside down. But knowing the specific type of dementia can help you plan for what lies ahead, understanding the diagnosis helps with decisions about long-term care and financial planning.


Bringing it All Together


In a nutshell, dementia is a general term for the symptoms of cognitive decline, while Alzheimer’s is a specific disease that causes dementia. Facing dementia is never easy, but understanding what you or your loved one is up against can offer some clarity in an otherwise confusing time.


At Grace, half of our cases involve needs relating to dementia. Should you need it, we're here to provide you with guidance and assist you in finding and selecting the most suitable dementia care and support services. 

Sources

1. Alzheimer's Society UK - What is Dementia?

2. NHS, "Alzheimer's Disease - Symptoms, Diagnosis and Treatment.

 

Grace Consulting are the UK’s founding providers of expert independent advice on elderly care advice, special needs advice and neurodiversity advice. 


Independence and client wellbeing are at the heart of everything we do. We listen, reassure and advise you on how to move forwards and find the best possible solutions for your unique life challenges. 

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