Dementia: The Complete Guide for Families and Carers

Around 57 million people worldwide live with dementia, and most are cared for at home by family members. Caring for someone with dementia can be one of the hardest and most meaningful things you ever do. You do not have to work it out alone.

Imagine your mother calling you for the third time in an hour, asking the same question. She has left the cooker on twice this month and got lost walking home from the market she has visited for 30 years. You feel frightened, frustrated and guilty all at once.

What dementia is

Dementia is not a single disease but a term for a group of symptoms caused by damage to the brain. It affects memory, thinking, language, reasoning, behaviour and the ability to carry out everyday tasks, and it gets worse over time.,Dementia is not a normal part of ageing. Many older people never develop it, and it can occasionally affect people under 65, which is called young-onset dementia.

Common types

• Alzheimer’s disease: the most common type, usually starting with memory problems
• Vascular dementia: caused by reduced blood flow to the brain, often after strokes; can progress in steps
• Dementia with Lewy bodies: fluctuating alertness, visual hallucinations, movement problems similar to Parkinson’s
• Frontotemporal dementia: often starts younger, with changes in personality, behaviour or language
• Mixed dementia: more than one type, very common in older people

Early signs

• Memory loss that affects daily life, such as forgetting recent conversations
• Difficulty planning, problem-solving or following familiar recipes
• Getting lost in familiar places
• Problems finding words or following conversations
• Misplacing items and being unable to retrace steps
• Poor judgement, such as falling for scams
• Withdrawing from work or social activities
• Changes in mood, personality or confidence

Getting a diagnosis

If you notice changes, encourage the person to see a healthcare provider. Some causes of memory problems are treatable, such as depression, thyroid problems, vitamin B12 deficiency, infections, medicine side effects and hearing loss.,Diagnosis usually involves a detailed history, ideally including someone who knows the person well, memory and thinking tests, blood tests and sometimes brain scans. A clear diagnosis allows access to treatment, support and planning while the person can still take part in decisions.

Treatment

There is currently no cure for most types of dementia, but treatment can help. Medicines such as donepezil, rivastigmine, galantamine and memantine may help with symptoms in Alzheimer’s disease and some other types for a time. Newer antibody treatments that target amyloid are approved in some countries for early Alzheimer’s disease, but have significant risks and limited availability.,Non-drug approaches are just as important: cognitive stimulation therapy, physical activity, social connection, managing hearing and vision, treating other health conditions, and good support for carers.

Communicating well

• Get the person’s attention and make eye contact before speaking
• Speak slowly and clearly, using short sentences
• Ask one question at a time, and offer simple choices
• Give time to respond
• Use gestures, pictures and touch where appropriate
• Avoid arguing or correcting unnecessarily; focus on feelings rather than facts
• Reduce background noise
• Never talk about the person as if they are not there

Understanding behaviour changes

As dementia progresses, many people show changes such as agitation, aggression, wandering, repetitive questions, suspicion, hiding things, sleep disturbance and shouting. These behaviours are often a way of communicating an unmet need, such as pain, hunger, thirst, needing the toilet, boredom, fear, overstimulation or loneliness.,Instead of focusing on stopping the behaviour, try to work out what the person might be trying to tell you. Keeping a diary of when behaviours happen and what came before can reveal patterns. Pain is often missed in people with dementia, so consider it carefully, especially if behaviour changes suddenly.

Practical approaches to common challenges

• Repetitive questions: answer calmly, use a whiteboard or notes, and gently redirect
• Agitation in the evening (sundowning): keep afternoons calm, increase light, reduce noise and caffeine
• Wandering: make sure the person has ID, consider door alarms or tracking devices, and offer meaningful activity and walks
• Refusing help with washing: choose a good time, explain step by step, keep them warm and covered, and offer choices
• Suspicion and accusations: do not argue; reassure, and keep spare keys or glasses in known places
• Hallucinations: check for infection or medicine effects; respond to the feelings rather than the content

Sudden changes: think of delirium

A sudden worsening of confusion, over hours or days, may be delirium rather than dementia progressing. Delirium is often caused by infections such as urinary or chest infections, dehydration, constipation, pain, new medicines or surgery. It is a medical emergency that needs prompt assessment and treatment. People with dementia are at much higher risk of delirium.

Medicines for behaviour: use with caution

Antipsychotic medicines are sometimes used for severe distress, aggression or psychosis in dementia, but they increase the risk of stroke, falls and death in people with dementia. Guidelines recommend trying non-drug approaches first and using antipsychotics only when there is serious risk or distress, at the lowest dose for the shortest time, with regular review. People with Lewy body dementia can react very badly to antipsychotics.

Keeping the home safe

• Remove trip hazards and improve lighting
• Install grab rails and consider a shower seat
• Use automatic cooker shut-off devices or remove knobs if needed
• Lock away medicines, cleaning products and sharp objects
• Lower the hot water temperature to prevent scalds
• Use clocks showing the day and date, and labels on cupboards
• Consider smoke and carbon monoxide alarms with visual signals

Eating and drinking

People with dementia may forget to eat or drink, lose interest in food, have difficulty using cutlery or develop swallowing problems later on. Weight loss and dehydration are common.,Offer small, frequent meals and finger foods, use contrasting coloured plates, eat together to model eating, limit distractions and offer drinks regularly. Check for dental pain or ill-fitting dentures. If coughing or choking with food appears, ask for a swallowing assessment.

Meaningful activity and daily routine

Boredom and lack of purpose contribute to distress. Activities do not need to be complicated; they should be meaningful and achievable. Folding laundry, helping with cooking, gardening, sorting objects, looking at photos, singing familiar songs, dancing and walking can all bring enjoyment and a sense of usefulness.,A predictable daily routine helps people with dementia feel secure. Keep meals, activities and bedtime at similar times each day, and allow plenty of time for each task.

Music and memories

Music often reaches people with dementia when words no longer do. Familiar songs from their youth can lift mood, reduce agitation and spark memories and conversation. Creating a personal playlist, singing together, or attending dementia-friendly music groups can be powerful. Reminiscence using photos, objects and stories can also bring comfort and connection.

Sleep problems

Sleep disturbance is common in dementia. Encourage daylight exposure and activity during the day, limit naps and caffeine, keep a calming bedtime routine, and make sure the person is comfortable, not in pain, and has been to the toilet. Night lights can reduce confusion if they wake. Sleeping tablets are generally best avoided because of falls and confusion.

Legal and financial planning

Planning early, while the person can still make decisions, is one of the most important steps after diagnosis. This may include appointing someone to make decisions about health, welfare and finances if the person loses capacity (often called a lasting power of attorney or similar, depending on the country), making or updating a will, and recording wishes about future care.,Discuss preferences about where the person would like to live, treatments they would or would not want, and end-of-life care. These conversations can be difficult, but they often bring relief and ensure the person’s wishes are respected.

Getting help and support

• Ask for a care needs assessment from local health or social services where available
• Find out about day centres, home care, respite care and support groups
• Dementia charities and helplines offer advice and emotional support
• Admiral nurses or dementia specialist nurses exist in some countries
• Memory clinics provide diagnosis and follow-up
• Faith and community groups may offer practical help

Looking after yourself as a carer

Caring for someone with dementia can be exhausting physically and emotionally. Carers are at higher risk of depression, anxiety and poor health. You cannot pour from an empty cup.,Accept offers of help, take regular breaks, keep in touch with friends, look after your own health appointments, and talk about your feelings. Feeling angry, resentful, sad or guilty is normal; these feelings do not make you a bad carer. Respite care, even for a few hours a week, can make caring more sustainable.

Stages of dementia

Dementia is often described in stages, although everyone is different. In the early stage, people may need reminders and help with complex tasks but remain largely independent. In the middle stage, they need more help with daily activities, may become confused about time and place, and behaviour changes are more common. In the later stage, people need help with almost all care, may lose the ability to speak, and have difficulty walking and swallowing.,Understanding these stages helps families plan ahead, but it is important to focus on the person in front of you and what they can still do and enjoy.

Moving into a care home

For many families, there comes a point when caring at home is no longer safe or sustainable. Moving a loved one into a care home is often accompanied by guilt, but it can be the right decision for both the person and the carer. Visit several homes, ask about their dementia experience, staffing and activities, and bring familiar items to make the new space feel like home. Your role changes, but you remain an important part of their life.

Hospital stays

Hospital can be particularly distressing for people with dementia, and stays increase the risk of delirium, falls and loss of abilities. Where possible, bring a “This is me” or similar document describing the person’s needs, preferences, routines and how they communicate.,Ask whether you can stay with the person or visit flexibly, bring glasses, hearing aids and dentures, and keep a list of their usual medicines. Ask about discharge planning early.

End-of-life care

In the later stages of dementia, the focus of care often shifts to comfort and quality of life. Common issues include infections, difficulty eating and drinking, weight loss and reduced mobility. Families may face decisions about hospital admissions, feeding tubes and resuscitation.,Palliative and end-of-life care teams can help manage symptoms, support families and make sure the person’s wishes are respected. Many people with advanced dementia can be cared for comfortably at home or in a care home with the right support.

Reducing the risk of dementia

Research, including the Lancet Commission on dementia prevention, suggests that a substantial proportion of dementia cases worldwide may be linked to modifiable risk factors. These include less education in early life, hearing loss, high blood pressure, high LDL cholesterol, smoking, obesity, depression, physical inactivity, diabetes, excess alcohol, traumatic brain injury, air pollution, social isolation and untreated vision loss.,This means that looking after your heart, staying active, treating hearing loss, staying socially connected and keeping your mind engaged can reduce your risk. What is good for the heart is good for the brain.

Young-onset dementia

Dementia in people under 65 brings particular challenges: diagnosis is often delayed, people may still be working, raising children or paying mortgages, and services may be designed for older people. Specialist young-onset services and support groups exist in some areas. Employers may need to make adjustments or support a planned exit from work. Financial and legal planning are especially important.

Stigma and culture

In many communities, dementia is misunderstood or seen as a normal part of ageing, a family shame, or a spiritual problem. This can delay diagnosis and support. Raising awareness, talking openly, and involving community and faith leaders can help families seek help sooner. People with dementia deserve dignity, respect and inclusion at every stage.

Questions to ask the healthcare team

• What type of dementia is it, and what should we expect?
• Are there medicines that might help?
• What support services are available locally?
• How can we plan for the future?
• Who do we contact if things suddenly get worse?
• What help is available for me as a carer?

Personal care with dignity

As dementia progresses, people often need help with washing, dressing, using the toilet and continence. These tasks can feel intrusive and frightening for the person, and may lead to resistance.

Approach calmly, explain what you are doing in simple steps, protect privacy by covering parts of the body not being washed, and let the person do as much as they can. Choose clothes that are easy to put on. If incontinence develops, check for treatable causes such as infection or constipation, establish regular toilet times, and ask about continence products and advice.

Driving and dementia

A diagnosis of dementia does not always mean someone must stop driving immediately, but as the condition progresses, driving becomes unsafe. Laws vary; in many countries, people must inform the licensing authority. Signs that driving is becoming unsafe include getting lost, near misses, new scrapes on the car and difficulty judging distances. Stopping driving can be a huge loss of independence, so plan alternatives for transport and involve the person in the decision where possible.

Technology that helps

• Automatic medicine dispensers with alarms
• Clocks showing day, date and time of day
• GPS trackers or location-sharing phones
• Door sensors and bed alarms
• Video calling to stay in touch with family
• Simplified phones and remote controls

Pain and dementia

People with dementia often cannot say they are in pain, so it is frequently missed and undertreated. Pain may show as agitation, aggression, restlessness, withdrawal, crying, grimacing, guarding a part of the body, or refusing to move or eat.

Pain assessment tools designed for people with dementia, such as the Abbey Pain Scale or PAINAD, can help carers and healthcare providers recognise pain. Common causes include arthritis, constipation, dental problems, infections and pressure sores. Treating pain, often with regular paracetamol, can significantly reduce distress and behaviour changes.

Siblings and family dynamics

Caring for a parent with dementia can strain relationships between siblings and other family members, especially when the load falls unevenly or people disagree about care decisions. Regular family meetings, sharing tasks according to each person’s strengths and availability, and being honest about limits can help. Sometimes an independent person, such as a social worker or mediator, can support difficult discussions.

Finding joy in the moment

Dementia takes much away, but moments of joy, humour and connection remain possible throughout. A shared song, holding hands, a favourite food, sitting in the garden, or looking at old photos can bring comfort to both the person and their carer. Many carers say that learning to live in the moment, rather than mourning what has been lost, helped them cope.

Scams and financial abuse

People with dementia are vulnerable to scams, cold callers and financial abuse, sometimes even from people they know. Watch for unusual bank activity, new “friends”, unpaid bills or large purchases. Setting up third-party access to accounts, call-blocking devices, and lasting powers of attorney or similar arrangements can help protect them. If you suspect abuse, contact local safeguarding services.

Grief while they are still here

Many carers experience “anticipatory grief”: mourning the gradual loss of the person they knew, even while they are still alive. Roles change, conversations become harder, and the future you imagined together disappears. These feelings are normal and valid. Talking to others in a similar situation, a counsellor or a faith leader can help. Allowing yourself to grieve can make space for continued love and connection.

A carer’s checklist

• Has the person had a diagnosis and medicines review?
• Are legal and financial arrangements in place?
• Is the home safe?
• Have you asked for a care needs or carer’s assessment?
• Do you have regular breaks?
• Do you know who to call in a crisis?

You are not alone

Millions of families around the world are walking the same path. Dementia charities, helplines, online forums and local groups exist because no one should face this alone. Reaching out for information, practical help and emotional support is one of the best things you can do for the person you care for, and for yourself.

Remember the person

Behind the diagnosis is the same person with a life story, relationships, values and preferences. Knowing what mattered to them, their favourite foods, music, routines and memories, helps everyone provide care that feels personal and respectful.

Small acts, big difference

A warm greeting, a familiar song or a gentle hand on the shoulder can calm distress more than any medicine. Kindness is at the heart of good dementia care.

Frequently asked questions

Is memory loss always dementia?

No. Memory problems can be caused by stress, depression, poor sleep, medicines, thyroid problems, vitamin deficiencies and other treatable conditions.

Is dementia hereditary?

Most dementia is not directly inherited, though family history slightly increases risk. A few rare forms are strongly genetic.

Should I correct someone with dementia when they are wrong?

Often it is kinder to go along with their reality or gently redirect, rather than arguing.

Can dementia be slowed?

Treating risk factors, staying active and socially engaged, and some medicines may help slow progression in some people.

How long do people live with dementia?

It varies widely, often many years after diagnosis, depending on the type, age and other health conditions.

But I promised I would never put them in a home

Many carers make that promise out of love. Circumstances change, and keeping someone safe and well-cared-for is also an act of love. Getting help, including residential care when needed, is not breaking a promise.

Related: Early signs of dementia · Dementia communication in hospital · Delirium in older people

Sources: World Health Organization dementia fact sheet, Alzheimer’s Disease International, Alzheimer’s Society (UK), Alzheimer’s Association (US), National Institute for Health and Care Excellence (NG97), Lancet Commission on dementia prevention (2024).