Dementia
Whether you are looking for yourself or supporting someone, you may need more than a definition. Learn what dementia means and which questions can help you understand assessment, care and everyday support.

Dementia is a syndrome with different causes.
Dementia describes a group of symptoms involving declining thinking abilities that affect everyday life. Memory, language, judgement or other abilities may be involved. It is not a normal part of ageing.
Alzheimer’s disease is one cause; other diseases can also cause dementia. Memory concerns alone do not establish the syndrome or its cause.
An explanation should lead to useful care.
- The diagnosis
What is known and what remains uncertain
- Your priorities
Which activities and concerns matter to you
- Care & support
What is available for your needs
- A point of contact
Who coordinates care and follow-up
Dementia is a broad clinical term, with different causes.
Dementia describes a syndrome affecting thinking abilities and daily functioning. Alzheimer’s disease is one cause, not a synonym for all dementia. The pattern and needs vary between people.
A diagnosis does not remove the person’s identity, preferences or ability to participate in decisions. Information should be addressed to you, with support to understand it if needed.

Consider the changes and the support you need.
These areas help frame a clinical conversation. They do not determine a type, stage or diagnosis online.
Remembering & words
Changes in remembering or communicating may affect familiar activities.
Planning & tasks
Planning or managing day-to-day tasks may become more difficult.
Mood & confidence
Mood, behaviour or confidence may change alongside thinking skills.
Individual needs
Your abilities and support needs may differ from another person’s.
Daily functioning helps explain what support is needed.
Memory may be one concern, alongside communication, planning or other thinking skills. What has become difficult in everyday life helps the clinician understand the situation.
Sudden confusion is a different kind of change and needs immediate medical help, including when dementia has already been diagnosed.
Thinking and communication
Changes described in your own words and everyday examples.
Daily activities
What you can do, what feels difficult and which help you want.
Health and wellbeing
Other conditions, medicines, mood and sensory needs.
An explanation takes more than one test.
A clinician considers the history of changes, daily function, health and medicines, and possible alternative explanations. Cognitive assessment, examination and further investigations may be needed.
Ask whether the cause is clear, whether further assessment is needed and who coordinates support. If you bring someone to help, your questions and preferences still matter.
Based on NHS
- 1The meaning
What does the diagnosis explain, and is the cause clear?
- 2Your priorities
Which activities, relationships or concerns do you want support with?
- 3The plan
Who coordinates care, and how will changes and treatment be reviewed?
Ask what is known and what still needs review.
Diagnosis may involve history, physical assessment, cognitive testing and other investigations. The clinician should explain the findings, possible cause and any uncertainty.
You can ask for written information and time for questions. Ask who will coordinate follow-up and what a change in symptoms should prompt you to do.
Based on NHS
Small adaptations should serve the life you want to keep living.
A familiar routine, a consistent place for important belongings or an accessible reminder may make a task easier. Choose supports with the person, rather than treating every adaptation as compulsory.
Clinical care should also address physical and mental health. Ask about medicines and other treatment options with the clinician; benefits and availability depend on the cause and individual situation.
A practical task
Identify something that has become harder or takes more effort.
A chosen adjustment
Try an accessible reminder, familiar arrangement or agreed help.
Review together
Keep what helps and discuss needs that remain difficult.
Planning can preserve your voice and support the people around you.
Discuss who you want involved, your preferences and what help is useful now. A diagnosis alone should not be used to assume someone cannot make a particular decision. Legal arrangements for decision support differ by country and need qualified local advice.
Supporters may need their own practical and emotional help. Ask about available care coordination and support rather than expecting one family member to manage everything.
- Support for caregivers
Information for the person providing care, alongside the needs of the person receiving it.
- Memory and cognition
A broader starting point for concerns still being assessed.
Find support. Prepare your next step.
Find care or prepare a conversation. You can ask for help before you have a diagnosis.
Your first sentence does not need to be perfect.
If you have a diagnosis, ask who coordinates your care and where to get help with a changing need. If you are worried about a gradual change, start with a clinical appointment rather than trying to diagnose it yourself.
Based on NHS
“I would like to understand the diagnosis, the available care and how my preferences will shape the support plan.”Make it sound like you
Your questions, with room for nuance.
You can read just the answer you need.
Is Alzheimer’s disease the same as all dementia?
No. Dementia has different causes. A clinician can explain which cause is suspected and what remains uncertain.
Does a diagnosis remove my say in care?
Your preferences and involvement still matter. Ask for support with decisions; legal questions require qualified advice for your location.
Can practical adaptations help?
They may make particular tasks easier. A routine, reminder or familiar place for belongings should fit your needs; it is not a cure or prevention guarantee.
Based on NHS
Is sudden confusion just part of an existing dementia diagnosis?
Do not assume that. Sudden confusion needs immediate medical assessment even when dementia is already present.
Based on NHS
Where this information comes from.
Use this hub to learn and prepare questions. It does not diagnose you or recommend a personal treatment plan. By Selfmora editorial; sources checked . Updated .
Additional explanations and examples: sources consulted . Examples illustrate ideas; they do not assess your personal health. Your questions
- What dementia means
- Dementia assessment and ongoing care
- Living well with dementia
- Sudden confusion: immediate medical help