Early Signs of Dementia: What to Look For

It is normal to forget things from time to time. Most of us misplace keys, forget why we walked into a room, or struggle to remember a name when we are tired or distracted. But when memory problems, confusion or changes in behaviour start to affect everyday life, it may be time to look more closely.

Dementia is not just ordinary ageing. It is a group of symptoms that affect how the brain works, including memory, thinking, language, judgement, mood and daily functioning. The early signs can be subtle. They may appear gradually, and family members often notice them before the person does.

This guide explains the early signs of dementia, what can look like dementia but may be something else, how to raise concerns sensitively, and when to seek medical or social care support.

What is dementia?

Dementia is an umbrella term for a set of symptoms caused by changes in the brain. Alzheimer’s disease is the most common cause, but dementia can also be caused by vascular dementia, dementia with Lewy bodies, frontotemporal dementia and other conditions.

Dementia usually develops gradually. It can affect memory, communication, reasoning, mood, personality and the ability to manage everyday tasks. In the early stages, symptoms may be mild enough that the person still lives independently, works, drives or manages most routines — but small changes begin to appear.

The NHS explains that common early symptoms include memory loss, difficulty concentrating, struggling with familiar daily tasks, difficulty following conversations, confusion about time and place, and mood changes. You can read more in the NHS guide to symptoms of dementia.

Early signs of dementia are not always obvious

One of the hardest things about early dementia is that the signs can be easy to explain away. A missed appointment may be blamed on being busy. Repeating the same story may seem harmless. Getting lost on a familiar route may be described as a one-off. A change in mood may be put down to stress, grief or ageing.

Any one of these things can happen without dementia. The concern is usually the pattern: symptoms that are new, becoming more frequent, affecting daily life, or noticed by several people.

It can help to ask: “Is this person managing as they usually would?” If the answer is no, it may be time to speak to a GP.

Memory loss that affects daily life

Memory problems are often the best-known early sign of dementia. This is not usually about occasionally forgetting a word or misplacing something. It is more about forgetting recent events, conversations or information that the person would normally remember.

Examples may include:

• asking the same question again and again
• forgetting recent conversations
• missing appointments or important dates
• forgetting whether bills have been paid
• buying the same item repeatedly because they forgot they already had it
• relying much more heavily on notes, calendars or family reminders

Someone may remember events from decades ago but struggle with what happened yesterday. This can be confusing for families, because long-term memories may still seem clear in the early stages.

Difficulty finding words or following conversations

Early dementia can affect language. A person may pause more often, lose their train of thought, repeat themselves, or struggle to find the right word. They may describe an object rather than name it — for example, saying “the thing for writing” instead of “pen”.

They may also find group conversations harder to follow, especially when several people are talking. This can lead to withdrawal from social situations, not because they do not care, but because conversation has become tiring or embarrassing.

Occasional word-finding difficulty is common, especially when tired. It becomes more concerning when it is new, frequent, worsening, or affecting confidence and communication.

Getting confused about time or place

People in the early stages of dementia may lose track of dates, times, seasons or routines. They may turn up very early or late, forget what day it is, or become confused about why they are somewhere.

They may also get lost in familiar places. This can be especially worrying if it happens while driving, walking to local shops, using public transport or returning home from a regular activity.

Confusion about place can increase risk, so families may need to think about safety early. This does not always mean removing independence straight away, but it may mean planning, reminders, safer routines and extra support.

Struggling with familiar tasks

Another early sign is difficulty doing things the person used to manage easily. This may include cooking a familiar meal, using a washing machine, following a recipe, managing online banking, taking medicine correctly, using a phone, or handling change in a shop.

At first, the person may cover up these difficulties or avoid tasks they used to do. They might say they are no longer interested in cooking, avoid paperwork, or become frustrated with technology.

The issue is not simply “not liking computers” or needing help with something new. It is a change in ability to manage familiar tasks.

Problems with planning, judgement or decision-making

Dementia can affect executive function, which is the brain’s ability to plan, organise, solve problems and make decisions. This can show up in practical ways long before memory problems seem severe.

You might notice:

• difficulty managing money or bills
• unusual spending or falling for scams
• trouble following steps in a task
• poor judgement around safety, cooking, driving or medication
• difficulty making decisions that used to be straightforward
• becoming overwhelmed by paperwork or appointments

These changes can be sensitive because they affect independence. It is important to approach the subject calmly and respectfully, while also taking practical risks seriously.

Changes in mood, personality or behaviour

Dementia does not only affect memory. It can also affect mood, confidence, personality and behaviour. A person may become more anxious, irritable, suspicious, tearful, withdrawn or easily upset. They may lose interest in hobbies, socialising or activities they used to enjoy.

Some people become more impulsive or say things that seem out of character. Others become unusually flat, quiet or apathetic. In frontotemporal dementia, personality and behaviour changes can sometimes appear earlier than memory problems.

These changes can be difficult for families because they may feel personal. Try to remember that if dementia is present, the behaviour may be part of changes in the brain rather than deliberate rudeness or lack of care.

Low mood, anxiety and depression can also mimic dementia, so it is important to get a proper assessment. Our guide to dementia vs depression vs mild cognitive impairment explains the differences in more detail.

Withdrawal from work, hobbies or social life

A person with early dementia may start avoiding situations that feel difficult. They may stop going to clubs, avoid calling friends, give up hobbies, or seem less interested in family gatherings.

Sometimes this is because they are embarrassed about forgetting names or losing track of conversation. Sometimes it is because travel, planning or noise has become overwhelming. Sometimes it is linked with low mood or anxiety.

Withdrawal is not always dementia, but if it comes with memory problems, confusion, word-finding difficulty or changes in daily functioning, it is worth discussing with a GP.

Misplacing things in unusual places

Everyone misplaces items. In dementia, the pattern may become more frequent or unusual. A person might put keys in the fridge, leave a purse in the bathroom cabinet, place food in odd places, or be unable to retrace their steps.

They may also become suspicious and believe someone has taken things. This can be distressing for both the person and their family. Try not to argue harshly. Reassurance, routine storage places and gentle searching often work better than confrontation.

Changes in vision, perception or spatial awareness

Some types of dementia affect how the brain interprets what the eyes see. This is different from needing glasses. A person may have trouble judging distances, recognising objects, reading, navigating stairs, parking a car or seeing things in low contrast.

They may trip more often, misjudge where a chair is, pour drinks inaccurately, or become anxious in busy visual environments. An eye test is still important, but if vision changes seem linked with confusion or daily difficulties, speak to a GP.

For general eye-related information, you may also find our resources on cataracts, glaucoma and macular degeneration useful.

Changes in personal care or home routines

Early dementia can affect day-to-day routines at home. You may notice that someone who was previously tidy, organised or well-groomed starts to struggle.

Examples include:

• wearing the same clothes repeatedly
• forgetting to wash, shave or brush teeth
• letting food go out of date
• leaving pans on the hob
• forgetting to take medicines
• missing meals
• not opening post or dealing with bills
• the home becoming unusually cluttered or unsafe

These signs are especially important in social care and home care planning. They may suggest that the person needs support with daily living, even if they do not yet need full-time care.

Is it dementia or normal ageing?

Normal ageing can involve slower recall, occasional forgetfulness and needing more time to learn new things. Dementia is more likely when symptoms interfere with daily life, independence, relationships or safety.

For example, occasionally forgetting someone’s name but remembering it later can be normal. Forgetting a close relative’s recent visit, repeatedly asking the same question, or getting lost on a familiar route is more concerning.

Normal ageing may mean taking longer to manage online banking. Dementia may mean losing track of bills, making unusual payments, or being unable to follow steps that used to be familiar.

What else can look like dementia?

Not every memory or thinking problem is dementia. Several treatable conditions can cause similar symptoms, which is one reason it is important to speak to a GP rather than assuming the worst.

Possible causes include:

• depression or anxiety
• stress, grief or burnout
• poor sleep or sleep apnoea
• hearing loss
• vitamin B12 deficiency
• thyroid problems
• dehydration
• urinary tract infection, especially in older adults
• medicine side effects
• alcohol-related problems
• recent illness or hospital admission

Sudden confusion is not typical of early dementia and may be delirium, infection, dehydration, medication-related or another urgent medical issue. If confusion appears suddenly over hours or days, seek medical advice urgently.

Some blood tests can help rule out other causes. Our guides to thyroid blood test results, full blood count results, vitamin D blood test results and how to understand blood test results may be helpful if tests are arranged.

When should you speak to a GP?

Book a GP appointment if memory problems, confusion, language difficulties, behaviour changes or problems with daily tasks are new, persistent or getting worse. It is better to seek advice early, even if the cause turns out to be something treatable.

A GP may ask about symptoms, medical history, mood, sleep, medicines, alcohol, daily functioning and family concerns. They may do memory or thinking tests, arrange blood tests, check for depression or other conditions, and refer to a memory clinic or specialist service if needed.

The NHS has information on dementia symptoms and diagnosis, including what may happen during the assessment process.

If you are unsure how to arrange an appointment, our guide to how to get a GP appointment quickly in the UK may help.

How to talk to someone about memory concerns

Raising dementia concerns can be difficult. The person may feel frightened, embarrassed, defensive or angry. They may not notice the changes themselves, or they may know something is wrong but be afraid to say it.

Choose a calm moment. Avoid starting the conversation during an argument or immediately after a mistake. Use gentle, specific examples rather than labels. For example, “I’ve noticed you’ve missed a few appointments recently and I’m worried about you” is usually better than “You have dementia”.

Try to focus on support rather than blame. You might say:

• “I wonder if it would be worth checking this with the GP.”
• “There are a few things that can affect memory, and some are treatable.”
• “I can come with you if that would help.”
• “I know this feels uncomfortable, but I’d rather we looked into it early.”

If the person refuses help but risks are increasing, keep a note of concerning events and seek advice from their GP practice, NHS 111 or local adult social care if safety is becoming an issue.

Why early diagnosis can help

Some people avoid seeking help because they fear a diagnosis. But early assessment can be useful. It may identify a treatable cause, such as low B12, thyroid disease, depression, sleep problems or medication side effects. If it is dementia, diagnosis can open the door to support, planning and treatment options.

Early diagnosis can help people:

• understand what is happening
• access memory services and support
• review medicines and health conditions
• plan finances, legal documents and future care
• make home adaptations early
• discuss driving, work and safety
• support carers before crisis point

Alzheimer’s Society has helpful information on dementia symptoms and signs, including early changes that may be easy to miss.

Home safety: early practical steps

If you are worried about early dementia, small home adjustments can reduce risk while preserving independence. The aim is not to take over everything, but to make daily life easier and safer.

Practical steps may include:

• using a large calendar or whiteboard for appointments
• setting phone reminders for medication or meals
• using a pill organiser if appropriate
• labelling cupboards or drawers
• keeping keys, wallet and glasses in one consistent place
• checking smoke alarms and carbon monoxide alarms
• using automatic shut-off devices where cooking safety is a concern
• removing trip hazards and improving lighting
• arranging regular check-ins from family, neighbours or carers

If someone is struggling with personal care, meals, medication, cleaning, shopping or safety, support at home may be needed. Our guide to home care: types of support, funding and how to choose explains what home care can include.

When to think about social care support

Social care support is not only for people who need a care home. It can include help at home, equipment, adaptations, day services, respite care and support for carers.

If dementia symptoms are affecting daily living, you can ask your local council for a care needs assessment. The NHS explains that you can contact social services at your local council and ask for a needs assessment. This assessment looks at what support may help someone manage daily life.

If you are caring for someone, you can also ask for a carer’s assessment. The NHS guide to looking after someone with dementia explains that a carer’s assessment may recommend help such as breaks from caring, training, help with housework and links to local support groups.

You may also find these guides helpful:

• How social care funding works in the UK
• Cost of live-in care vs care home in the UK
• Care homes in the UK: types, costs and ratings
• Care home fees

Supporting someone while keeping their dignity

Dementia can affect confidence and identity. A person may feel embarrassed if they cannot manage things they once did easily. Families may feel torn between protecting them and respecting independence.

Try to support the person in ways that preserve choice. Offer help without taking over too quickly. Break tasks into smaller steps. Keep routines familiar. Avoid correcting every small mistake. Use reassurance and calm communication, especially if the person is anxious or confused.

It can also help to involve the person in decisions early, while they can still express preferences clearly. This may include who they would want involved in care, where they would prefer to live, what routines matter to them, and what support they would accept.

Driving, money and legal planning

Early dementia concerns can raise difficult practical questions. Driving, money management and legal planning should be approached early and sensitively.

A dementia diagnosis does not automatically mean someone must stop driving immediately, but they must follow DVLA rules and medical advice. If there are safety concerns before diagnosis, discuss them with a GP.

Financial safety is also important. Families may notice unpaid bills, unusual spending, lost bank cards or vulnerability to scams. Gentle support with paperwork, direct debits and trusted contacts can help.

Legal planning may include lasting power of attorney, advance care planning and making sure important documents are in order. It is easier to arrange these while the person still has capacity to make decisions.

When symptoms are sudden or rapidly worsening

Dementia usually develops gradually. If confusion, drowsiness, agitation, hallucinations or memory problems come on suddenly over hours or days, think about urgent medical causes such as infection, dehydration, medication side effects, low blood sugar, stroke or delirium.

Seek urgent medical advice if someone suddenly becomes confused, much sleepier than usual, very agitated, weak, feverish, unable to drink, or unsafe at home. Call 999 for stroke symptoms, collapse, severe breathing problems, chest pain or severe illness.

Our guides to dehydration symptoms, stroke symptoms and TIA and chest pain may be useful for recognising urgent symptoms.

Final thoughts

The early signs of dementia can be subtle: repeated questions, missed appointments, word-finding difficulty, confusion with time or place, changes in mood, struggling with familiar tasks, or withdrawal from normal activities.

These symptoms do not always mean dementia. Depression, sleep problems, infections, dehydration, vitamin deficiencies, thyroid disease and medicine side effects can all cause similar changes. But persistent or worsening symptoms should be checked.

If you are worried about yourself or someone close to you, start with a GP appointment. Early assessment can help identify treatable causes, support diagnosis if needed, and make it easier to plan care, safety and support at home.

For official information, see the NHS guide to dementia symptoms and diagnosis and Alzheimer’s Society’s guide to dementia symptoms.

This article is for general information only and should not replace medical or social care advice. If you are worried about symptoms, speak to a GP, NHS 111 or local adult social care. Call 999 in an emergency.

Frequently asked questions

What are usually the first signs of dementia?

Early signs can include memory loss, repeating questions, difficulty finding words, confusion about time or place, struggling with familiar tasks, mood changes, poor judgement and withdrawal from social activities. The key concern is a pattern of change that affects daily life.

Is forgetfulness always a sign of dementia?

No. Occasional forgetfulness is common, especially with stress, poor sleep, low mood or distraction. Dementia is more likely when memory problems are persistent, worsening, and interfere with everyday tasks, safety, conversations or independence.

Can dementia symptoms come on suddenly?

Dementia usually develops gradually. Sudden confusion or a rapid change over hours or days may be caused by infection, dehydration, medication side effects, stroke, low blood sugar or delirium. Sudden symptoms should be assessed urgently.

What conditions can be mistaken for dementia?

Depression, anxiety, poor sleep, hearing loss, thyroid problems, vitamin B12 deficiency, dehydration, infections, medicine side effects and alcohol-related problems can all cause memory or thinking difficulties. A GP can help check for treatable causes.

When should I take someone to the GP about memory problems?

Book a GP appointment if memory problems, confusion, language difficulties, behaviour changes or problems with daily tasks are new, persistent, worsening or causing safety concerns. It is better to ask early than wait until there is a crisis.

How do I talk to a parent about possible dementia?

Choose a calm moment and use specific examples. Avoid accusing or diagnosing them yourself. You might say, “I’ve noticed you’ve missed a few appointments and I’m worried — could we speak to the GP together?” Keep the focus on support and reassurance.

Can someone with early dementia still live at home?

Yes, many people with early dementia continue living at home, especially with routines, reminders, family support, home adaptations or care visits. Needs can change over time, so regular review and planning are important.

What support is available for carers?

Carers can ask their local council for a carer’s assessment. This may lead to support such as respite breaks, training, help with practical tasks or links to local support groups. Dementia charities and local services can also provide advice and emotional support.