What are the 7 stages of dementia?
The 7 stages of dementia are a framework that can help healthcare professionals, families and people living with dementia understand how the condition changes over time.
Dementia is a progressive disease. With time, symptoms become more noticeable and increasingly impact day-to-day life.
The 7 stages can be a useful tool for navigating these changes. It shows typical patterns in how dementia progresses, which can make it easier to understand symptoms and talk about support and care needs.
However, doctors don’t use the 7 stages to diagnose dementia, and not everyone experiences the same symptoms in the same order. Dementia affects everyone differently, and different types of dementia can have different patterns of symptoms.
That’s why it’s best to see the 7 stages as a helpful guide rather than a strict timeline. It can provide a rough idea of how dementia might affect you or someone else, but it can’t tell you exactly what will happen or when.
Timeline of dementia stages
The early stages
In the first 3 stages, a person doesn’t necessarily have dementia. They may have no noticeable symptoms at all. Or they may be experiencing changes linked to normal ageing, mild cognitive impairment or another cause entirely.
This is important because experiencing mild changes in memory or thinking doesn’t guarantee a person will develop dementia. It’s quite possible they’ll go on to live a healthy, independent life without ever moving into the later stages.
Stage 1: no noticeable signs of cognitive decline
In stage 1, there are no signs of dementia. A person at this stage can carry on with everyday activities as usual.
Most adults with no noticeable problems with memory or thinking would fall into stage 1. It’s possible that changes in the brain that may eventually lead to dementia have started. However, it’s impossible to tell without a brain scan.
Stage 2: mild forgetfulness
At stage 2, a person experiences mild memory problems. They might occasionally forget names or misplace items.
These changes might be a sign of normal age-related forgetfulness. They don’t automatically mean that the person is developing dementia.
Stage 3: mild cognitive impairment
People living with mild cognitive impairment (MCI) experience noticeable changes in memory and thinking skills. These changes are worse than normal ageing. However, they aren’t classed as dementia and won’t necessarily develop into dementia.
At this stage, symptoms become more obvious. Family members might notice the person becoming more forgetful, struggling to find the right words or getting lost more often. They might also find it harder to focus on everyday tasks.
If you notice changes like these, it’s important to seek medical advice as soon as you can. While it’s not inevitable that MCI will progress to dementia, it’s always best to start treatment sooner rather than later.
The later stages
At stages 4 and above, changes become even more noticeable and are increasingly likely to impact a person’s day-to-day life.
Stage 4: early-stage dementia
A person at stage 4 is experiencing moderate cognitive decline. They might be:
• Getting increasingly withdrawn or forgetful
• Having more problems concentrating
• Finding it harder to travel to new places alone
However, they can often still perform most everyday tasks, travel to familiar locations and recognise familiar people and places.
That said, changes are likely to show up in cognitive tests at this stage and may noticeably impact everyday life. If the person hasn’t already been assessed, their GP might recommend further tests to understand what’s causing the symptoms.
It’s common for people at this stage to use denial as a way to cope with the changes they’re experiencing. They may appear emotionally numb or avoid situations where people might notice their symptoms.
Stage 5: moderately severe cognitive decline
One of the biggest changes at stage 5 is that the person can no longer look after themselves without some help. While they’re usually able to eat and use the toilet independently, they’ll often need support with dressing. If they dress themselves, they may make mistakes, such as putting shoes on the wrong feet.
Memory loss also becomes more prominent at this stage. The person can likely remember the names of their children and spouse. However, they may forget other important personal details, such as:
• Their grandchildren’s names
• An address or phone number they used to know by heart
• The name of the school they went to
They might also become more disoriented about time or place. For instance, they may forget the current date, day of the week or season.
Stage 6: severe cognitive decline
At stage 6, a person needs daily support with dressing, bathing, eating and using the toilet. They can typically remember their own name, but forget most details of their recent life. They may occasionally forget their spouse’s name, too, and will generally be confused about where they are and what time it is.
Other late-stage signs of dementia can also appear, including:
• Delusions: for instance, they might talk to imaginary people or accuse their spouse of not being who they say they are
• Obsessive behaviour, such as cleaning something repeatedly
• Cognitive abulia: a severe lack of drive and willpower, including difficulties starting tasks or hobbies on their own
• Changes in personality and behaviour: these can include anxiety, agitation and aggression
Stage 7: very severe cognitive decline
At stage 7, a person often loses the ability to speak and needs support with most activities, including walking. Family members may find it difficult to provide the 24-hour care they need. Specialised live-in dementia carers can help by providing comfort and around-the-clock support to improve quality of life.
7 stages of dementia chart: how do the different stages compare?
| Stage | What it means | Typical symptoms | Typical care needs |
|---|---|---|---|
| 1. No signs of dementia | No noticeable changes in memory or thinking | No significant problems with memory, thinking or everyday activities | None |
| 2. Mild forgetfulness | Very mild changes, similar to normal ageing | Occasional forgetfulness, such as misplacing items or forgetting names | No formal care usually needed, though practical memory aids such as reminders and calendars may help |
| 3. Mild cognitive impairment | Mild but noticeable changes | More frequent memory problems, plus difficulties finding words or concentrating | Some additional support with complex tasks may be helpful, e.g. managing appointments, organising paperwork or navigating unfamiliar places |
| 4. Early-stage dementia | Moderate changes with some impact on day-to-day life | More noticeable memory problems, as well as difficulties with complex tasks, planning and unfamiliar situations | Regular support may become helpful, including assistance with tasks like shopping, cooking and managing medicines and finances |
| 5. Moderately severe cognitive decline | Increasing difficulties staying independent | Difficulties remembering important information and confusion about time or place | Increasing family support may be needed, such as help with everyday activities, staying safe at home and personal care; visiting care might be appropriate for some |
| 6. Severe cognitive decline | Significant loss of independence | Major memory problems, difficulty communicating and increasing problems with dressing, washing and eating | Significant support often required throughout the day, including help with washing, dressing, eating, mobility and toileting; live-in or overnight care may be needed |
| 7. Very severe cognitive decline | Very little independence and 24-hour care needs | Very limited communication, difficulty recognising people and major mobility problems | Full-time care and support often needed, focusing on comfort, dignity and quality of life |
Where do the 7 stages of dementia come from?
The 7 stages of dementia are based on the Global Deterioration Scale (GDS), created in 1982 by Dr Barry Reisberg.
Dr Reisberg created the GDS as a tool to assess Alzheimer’s and similar forms of dementia. However, doctors and patients now use the 7 stages to assess many different types of dementia and help understand how to provide the best possible care.
Are the 7 stages the same for everyone?
No. And that’s really important.
When the GDS was created, it was mostly meant as a tool for assessing Alzheimer’s and other forms of primary degenerative dementia. However, there are more than 100 types of dementia, and the symptoms and progression can be quite different depending on the type.
What’s more, dementia affects everyone differently. One person could be at stage 5 but be mostly independent, while another at the same stage might need more support.
The 7 stages can be a useful framework for understanding how dementia might progress and how a person’s needs may change. However, it’s not a roadmap. Some symptoms might happen in a different order, be more or less severe, or not happen at all.
How long do the 7 stages of dementia last?
There’s no fixed timeline.
Because dementia is a progressive disease, symptoms always get more noticeable over time and have an increasing impact on day-to-day life. However, it’s different for every person and can vary depending on the type of dementia.
One person might be able to live independently for several years, while another may need more help early on.
What we can say is that dementia usually progresses over several years. That might mean:
• Stages 1 to 3 last around 2 years
• Stages 4 and 5 last from 2 to 4 years
• Stages 6 and 7 last about 1 or 2 years
Bear in mind these figures are a very rough guide. They’re based on research into early, middle and late stage dementia, but don’t map neatly onto the 7 stages of dementia.
What can influence how quickly symptoms develop?
Many factors can impact how quickly or slowly symptoms develop. That includes:
• The type of dementia: Alzheimer’s disease, for instance, can take decades to develop, while vascular dementia often causes very rapid changes
• Age: dementia can progress differently in younger and older people
• Other health conditions: living with health problems like heart disease, high blood pressure and diabetes can make symptoms progress faster
• The individual: everyone’s experience of dementia is different, with some needing more support than others at different stages
The 7 stages of dementia and life expectancy
If you or someone you love is living with dementia, it’s natural to want to understand the stages of dementia before death.
Unfortunately, dementia is fatal. Right now, it’s the leading cause of death in the UK, with around 77,000 people passing away from the disease each year (Alzheimer’s Research UK).
However, with the right support, some dementia patients can continue to enjoy a good quality of life and remain independent in some areas for years.
It all depends on the person and on the type of dementia. Some types tend to progress more quickly. For instance:
• Alzheimer’s often progresses slowly and steadily. The average life expectancy after diagnosis is 8 to 12 years, but it can range from 4 years to more than 20.
• Frontotemporal dementia typically progresses faster than Alzheimer’s, with an average life expectancy after diagnosis of 6 to 8 years.
• Vascular dementia patients often experience sharp, sudden changes. After diagnosis, typical life expectancy is around 5 years.
• Lewy body dementia tends to progress at a moderate rate. Its typical post-diagnosis life expectancy is about 6 years.
If you need extra support, don’t be afraid to reach out. Charities like Dementia UK and the Alzheimer’s Society offer free emotional support to people living with dementia and their families.
What are the stages of Alzheimer’s?
The 7 stages of dementia are based on the Global Deterioration Scale, which focuses on Alzheimer’s and similar forms of dementia.
So, if you want to understand how Alzheimer’s progresses and how it might affect someone, the 7 stages are a good starting point.
However, organisations like the Alzheimer’s Society often use a different framework to describe the progression of Alzheimer’s. Rather than using 7 detailed stages, it categorises symptoms into three broad stages: early, middle and late.
Here’s a quick summary of that framework:
| Stage of Alzheimer's | What you might notice |
|---|---|
| Early Alzheimer's | Increasing forgetfulness, difficulty finding words and problems with planning or organising; however, the person is usually still able to live independently |
| Middle Alzheimer's | More memory and communication problems, confusion and changes in behaviour or mood; everyday tasks become more difficult |
| Late Alzheimer's | Severe difficulties with communication and memory; the person typically needs support with movement and personal care and is more vulnerable to other health problems |
Your questions answered
How many stages of dementia are there?
Different frameworks describe the stages of dementia differently. Some use three broad categories (early, middle and late), while others are more detailed. The 7 stages of dementia framework provides a detailed breakdown of a typical dementia journey and is commonly used by patients, families and medical professionals.
Can early-stage dementia be reversed?
No, unfortunately. However, it can be treated. Doctors can prescribe medicines such as cholinesterase inhibitors to help manage the symptoms of early-stage dementia. And non-drug therapies, such as cognitive stimulation therapy, can help strengthen memory, soothe anxiety and improve quality of life.
When is late-stage dementia?
Late-stage dementia is the most severe phase of dementia. At this stage, a person living with dementia often loses the ability to speak, struggles with eating and swallowing and needs around-the-clock support. They will likely benefit from 24-hour dementia home care, which will focus on providing comfort and improving quality of life.
Are hallucinations late-stage dementia?
Not necessarily. Hallucinations are more common in late-stage dementia, but they can occur at different points depending on the person and the type of dementia. People living with Lewy body dementia, for instance, often experience hallucinations during the early stages of the condition.
If someone with dementia starts experiencing hallucinations, it’s worth speaking to their GP. That’s because other health problems or even medications can cause hallucinations or make them worse.
At what stage will a person living with dementia need care?
It varies. Some people benefit from more care during the early stages of dementia. Others can stay relatively independent for quite a long time.
That’s why we offer various types of dementia home care. It means you can choose the best fit for you or your loved one, whether that’s occasional visits or 24-hour live-in care.
If you’d like to know more about your care options or book a care trial, get in touch with our team whenever you’re ready on 0800 138 4030 or email: [email protected] to discuss your requirements.
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