Aged Care
The 7 Stages of Dementia: What to Expect at Each Stage (Australian Guide 2026)
Quick Answer
The 7 stages of dementia come from the Global Deterioration Scale: no cognitive decline, very mild decline, mild decline, moderate decline or early dementia, moderately severe decline, severe decline, and very severe decline or late dementia. Stages 1 to 3 come before a diagnosis, stages 5 and 6 are the middle stages, and progression varies between people.
When someone you love is diagnosed with dementia, one of the first questions is what happens next. The 7 stages of dementia offer a way to understand how the condition usually progresses, from the first subtle changes to the point where full-time care is needed. Knowing the stages of dementia helps families plan ahead, recognise when more support is needed and make decisions before a crisis.
This guide explains each stage in plain language, what you may notice, how to help, and which Australian services and supports are available along the way. Every person’s experience is different, so use the stages as a guide rather than a timetable. Throughout, we point to trusted national services that families in Brisbane, the Gold Coast and across Queensland can contact for free advice.
1
2
3
4
5
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7
Before diagnosis
Early
Middle
Late
Dementia in Australia: The Numbers
According to the Australian Institute of Health and Welfare, an estimated 439,000 Australians were living with dementia in 2025, a figure projected to reach about 459,000 in 2026 and close to 1.1 million by 2066. Nearly two-thirds are women. Dementia was the leading cause of death in Australia in 2024.
Dementia Australia estimates around 88,200 Queenslanders are living with dementia in 2026, and more than 1.7 million Australians are involved in caring for someone with the condition. Most people with dementia live in the community rather than in residential care, which means families and carers provide much of the support, especially in the earlier stages.
What Are the 7 Stages of Dementia?
The 7 stages come from the Global Deterioration Scale, developed by Dr Barry Reisberg and colleagues in 1982. It is most closely linked with Alzheimer’s disease, the most common form of dementia, and describes progression from no impairment to very severe decline.
In Australia, health professionals and Dementia Australia often talk about early, middle and late stages instead. The two approaches fit together: stages 1 to 3 come before a dementia diagnosis, stage 4 is early dementia, stages 5 and 6 are the middle stages, and stage 7 is the late stage.
Not everyone moves through every stage in order, and the pace varies enormously. Other types of dementia, such as vascular dementia, frontotemporal dementia and dementia with Lewy bodies, can follow quite different patterns. A GP or specialist is the best person to explain what to expect for a particular diagnosis.
STAGE1
Stage 1: No Cognitive Decline
What you may notice: Nothing. Memory and thinking work normally, and there are no signs of dementia.
What helps: Looking after brain health. Regular exercise, social connection, managing blood pressure and diabetes, and protecting hearing all support long-term brain health.
STAGE2
Stage 2: Very Mild Cognitive Decline
What you may notice: Occasional forgetfulness, such as misplacing keys or searching for a word. These changes are common with normal ageing and are rarely noticeable to others.
What helps: If the person is worried, a GP visit can rule out treatable causes such as medication side effects, vitamin deficiencies, depression or sleep problems.
STAGE3
Stage 3: Mild Cognitive Decline
What you may notice: Changes that family, friends or colleagues start to see. The person may forget recent conversations, repeat questions, lose track of appointments or struggle to organise and plan.
What helps: A thorough medical assessment. This stage is often described as mild cognitive impairment, and not everyone with it goes on to develop dementia. Early assessment opens the door to planning and support.
STAGE4
Stage 4: Moderate Cognitive Decline (Early Dementia)
What you may notice: Difficulty managing money, cooking a complex meal or planning travel. The person may forget recent events and withdraw from challenging social situations. A diagnosis is often made at this stage.
What helps: Planning while the person can take part in decisions. This is the time to arrange an Enduring Power of Attorney and Advance Health Directive, discuss future wishes, and consider an aged care assessment.
STAGE5
Stage 5: Moderately Severe Cognitive Decline
What you may notice: The person needs help with day-to-day life. They may not remember their address or phone number, become confused about the day or season, and need help choosing appropriate clothing. They usually still recognise close family and can eat and use the toilet independently.
What helps: Regular support at home through the Support at Home program, safety changes around the house, and planned breaks for the main carer.
STAGE6
Stage 6: Severe Cognitive Decline
What you may notice: The person needs help with most personal care, including dressing, bathing and toileting, and may become incontinent. They may forget the names of close family members, experience changes in sleep, and show changes in mood or behaviour such as anxiety, agitation or suspicion.
What helps: Round-the-clock support. Many families consider residential care at this stage, and specialist advice on changes in behaviour is available free through Dementia Support Australia.
STAGE7
Stage 7: Very Severe Cognitive Decline (Late Dementia)
What you may notice: The person gradually loses the ability to speak, walk, sit up without support and swallow safely. They need full care with every aspect of daily life.
What helps: Comfort-focused care. Palliative care focuses on dignity, pain relief and quality of life, and supports families through this time.
Common Types of Dementia
Dementia is an umbrella term for a group of conditions that affect memory, thinking and the ability to manage everyday life. The most common types are:
- Alzheimer’s disease: the most common form, usually beginning with gradual memory loss for recent events.
- Vascular dementia: caused by reduced blood flow to the brain, often after strokes. Changes can happen in steps rather than gradually.
- Dementia with Lewy bodies: can involve fluctuating alertness, visual hallucinations and movement changes similar to Parkinson’s disease.
- Frontotemporal dementia: often begins at a younger age and may first affect personality, behaviour or language rather than memory.
The Stages of Dementia at a Glance
| Stage | Phase | Typical signs | Level of support |
|---|---|---|---|
| 1 | No impairment | None | Independent |
| 2 | Before diagnosis | Occasional forgetfulness | Independent |
| 3 | Before diagnosis | Noticeable memory and planning difficulties | Mostly independent |
| 4 | Early dementia | Trouble with finances, complex tasks | Some help with complex tasks |
| 5 | Middle | Confusion about time and place, help choosing clothes | Daily help and supervision |
| 6 | Middle to late | Help with personal care, behaviour changes | Round-the-clock support |
| 7 | Late | Loss of speech, mobility and swallowing | Full care, comfort focus |
When to see a GP
Memory changes are not always dementia. Book a GP appointment if you notice:
- memory problems that are getting worse or affecting daily life
- getting lost in familiar places
- difficulty managing money, medication or household tasks that were once easy
- changes in personality, mood or judgement
- a sudden change in confusion, which needs urgent medical attention as it may signal delirium or another illness
How Long Does Each Stage of Dementia Last?
There is no fixed timeline. The AIHW notes that the time from diagnosis to death is highly variable. Some people live with dementia for many years, while others progress more quickly. The type of dementia, age at diagnosis, other health conditions and the quality of care and support all play a part.
Rather than focusing on how long each stage might last, it is usually more helpful to watch for changes in what the person can safely do and to review support whenever their needs change.
Planning Care Through the Stages of Dementia
Early stages. Focus on diagnosis, legal and financial planning, staying active and connected, and learning about the condition. An aged care assessment can be arranged through My Aged Care on 1800 200 422.
Middle stages. Home support usually increases. Funding for home support is allocated through the Support at Home program, and waits can be long, so apply early. Our guide to aged care waiting lists in Queensland explains current wait times. Regular breaks for carers become essential.
Advance care planning. As dementia progresses, the person will gradually lose the ability to make complex decisions. Talking early about their values, where they would like to be cared for and what matters most at the end of life gives families clear guidance later. In Queensland, an Enduring Power of Attorney covers personal, financial and health decisions, while an Advance Health Directive records wishes about medical treatment. A GP, solicitor or the Office of the Public Guardian can explain the options.
Later stages. Many people eventually need care 24 hours a day. The AIHW reports that more than half of people in permanent residential aged care are living with dementia. When considering residential care, ask each home directly how it supports people with dementia, including its staffing, environment and approach to changes in behaviour. Our guide to ageing in place vs residential care covers the signs that home support is no longer enough.
Communicating as Dementia Progresses
How you communicate can make a real difference to the person’s comfort and confidence at every stage.
Keep it simple. Use short sentences, ask one question at a time and give the person time to respond.
Avoid arguing or correcting. If the person is confused about the time or place, gently redirect rather than insisting on the facts.
Use more than words. Eye contact, a calm tone, touch and familiar music can help, especially in the later stages when speech is limited.
Look for the feeling behind the behaviour. Agitation or restlessness can be a sign of pain, hunger, tiredness, boredom or an uncomfortable environment. Addressing the cause often helps more than responding to the behaviour itself.
Support for Families and Carers
Caring for someone through the stages of dementia is demanding. These free national services can help at every stage:
National Dementia Helpline
Information, advice and support from Dementia Australia
1800 100 500
Dementia Support Australia
Specialist advice on changes in behaviour, 24 hours a day
1800 699 799
Carer Gateway
Counselling, coaching and emergency respite for carers
1800 422 737
My Aged Care
Aged care assessments and access to services
1800 200 422
If you are the main carer, our guide for the ageing carer in Australia covers Carer Payment, Carer Allowance and respite options in detail.
Questions About Aged Care?
Superior Care Group is a family-owned aged care provider that has cared for older Queenslanders for over 45 years, with residences at Wellington Point and on the Gold Coast. If you have questions about residential aged care, respite or palliative care, our team can talk through your situation and help you understand your options.
Talk to our team
Wellington Park, Wellington Point
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