Vascular dementia assessment
An assessment to find out whether memory and thinking problems are caused by reduced blood supply to the brain, and to manage the risk factors behind it.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- Vascular dementia is caused by reduced blood supply to the brain, often from stroke or small vessel disease.
- It can affect planning, concentration and speed of thinking more than memory at first, and may come on in steps.
- There is no cure, but treating risk factors like blood pressure, diabetes and irregular heartbeat may help protect the brain from further damage.
- It often occurs alongside Alzheimer's disease (mixed dementia), and a brain scan is an important part of the assessment.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your psychiatrist will give you advice for your situation.
Clarifies whether reduced blood supply to the brain is causing the symptoms
Sudden weakness, slurred speech or facial drooping — this is a possible stroke and is a 999 emergency, not a clinic referral.
You may feel tired after testing. A first impression may be shared, but a full answer usually follows once the scan and blood results are back.
A clear, compassionate explanation of the diagnosis and an honest account of what treatment can achieve.
You may feel tired after testing. A first impression may be shared, but a full answer usually follows once the...
Results are reviewed together and the diagnosis is usually given, with a letter to your GP and a plan focused on...
Blood pressure, diabetes, cholesterol and heart rhythm are reviewed and treated. Medicines may be started or...
The team and family watch for changes in symptoms and mood. Support is put in place and planning ahead is...
What is a vascular dementia assessment?
Vascular dementia is the second most common type of dementia. It happens when parts of the brain do not get enough blood and oxygen — for example after a stroke, after several small strokes, or because of damage to the brain's small blood vessels over time (small vessel disease).
Its symptoms can differ from Alzheimer's disease. Rather than memory being first to go, people may struggle with planning, concentration, slowed thinking, and changes in mood. Symptoms can come on suddenly after a stroke, or creep up gradually. Many people have both vascular changes and Alzheimer's together, which is called mixed dementia.
Assessment means finding out whether reduced blood supply to the brain is causing the symptoms. A memory clinic team builds a picture from your history, an account from someone who knows you well, tests of thinking, blood tests, and a brain scan, which often shows the vascular changes.
There is no cure and no medicine that reverses vascular dementia. But managing the things that damage blood vessels — such as high blood pressure, diabetes, an irregular heartbeat, high cholesterol and smoking — can help protect the brain from further harm, and support and planning matter throughout.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Options at a glance
These are the main approaches described in this guide. The right option depends on the diagnosis, your goals and what your clinician thinks is safe.
History and collateral history
The clinician asks how symptoms started — suddenly, in steps, or gradually — and how they affect daily life, usually with an account from a relative or friend. A history of...
Cognitive (pen-and-paper) tests
Tests of thinking that look beyond memory, including planning, attention and speed. In vascular dementia, slowed thinking and difficulty with planning often stand out. Scores...
Blood tests and physical check
These look for treatable conditions and for vascular risk factors — blood pressure, diabetes, cholesterol, thyroid and vitamin levels — and may include checking the heart...
Brain scan
A CT or MRI scan often shows the changes of stroke or small vessel disease. The scan is especially useful in vascular dementia, but is still read together with the clinical...
Preparing for your test
- Bring someone who knows you well; their account of how and when symptoms changed is very useful.
- Note whether the problems came on suddenly, in steps, or gradually, with everyday examples.
- Bring a full list of your medicines, including anything for blood pressure, cholesterol or thinning the blood.
- Mention any history of stroke, mini-strokes (TIAs), heart problems, diabetes or high blood pressure.
- Bring glasses and hearing aids and use them during testing, as poor eyesight or hearing can lower scores unfairly.
- Write down your questions and any medical words used, so you can look them up later.
- If a scan is planned, mention any pacemaker, metal implants, or difficulty with enclosed spaces.
What happens
At the assessment, the clinician talks with you and, where possible, the person who came with you, about your symptoms, your physical health, your mood and your daily life, and asks about strokes and vascular risk factors.
You will do pen-and-paper tests, which in vascular dementia often focus on planning, attention and speed of thinking as well as memory. Most people have blood tests and a physical check, including blood pressure and often a heart-rhythm check, and a brain scan is usually arranged.
A brain scan is particularly helpful here, as it often shows the changes of stroke or small vessel disease. The team may give a first impression at the visit, but a clear answer usually follows once the scan and blood results are back.
If vascular dementia is diagnosed, the plan focuses on managing risk factors to protect the brain from further harm — for example treating blood pressure, diabetes, cholesterol and irregular heart rhythm, and supporting healthy lifestyle changes — alongside support and planning.
Is this test right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Sudden weakness, slurred speech or facial drooping — this is a possible stroke and is a 999 emergency, not a clinic referral.
- Sudden confusion over hours or days — this points to delirium or a new stroke and needs urgent medical assessment.
- Someone acutely unwell or in pain — treat the illness first, then reassess thinking once they are stable.
- Where untreated depression or another reversible cause is the likely explanation and should be addressed first.
Delay or rearrange if…
- There has been a very recent stroke or the person is medically unstable.
- There is a current infection, delirium or recent hospital stay affecting thinking.
- The person is in crisis or too distressed to take part in testing.
- Key information is missing — no collateral history, or an incomplete medication list.
- Eyesight or hearing problems would make test scores unreliable until corrected.
Alternatives to discuss
- A GP and vascular review focused on controlling blood pressure, diabetes, cholesterol and heart rhythm.
- Stroke-service or neurology input where stroke is the main issue.
- Treatment of reversible causes such as low mood, thyroid problems or vitamin shortage first.
- Watchful waiting with planned review if symptoms are mild or the diagnosis is uncertain.
- The NHS pathway rather than private assessment if speed is not the main concern.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Benefits
- Clarifies whether reduced blood supply to the brain is causing the symptoms
- Identifies vascular risk factors that can be treated to help protect the brain from further damage
- Picks up other treatable conditions and mixed dementia where present
- Opens access to support, information and benefits for the person and family
- Lets the person plan ahead while they can take part in decisions
- Can reduce the risk of further strokes through better control of blood pressure, diabetes and heart rhythm
Risks & complications
- Finding the tests tiring or upsetting, and worry while waiting for results
- Distress on hearing the diagnosis
- Symptoms that step down further after a new stroke, despite treatment
- Needing to start or change several medicines for risk factors
- An unclear diagnosis at first, or uncertainty about how much is vascular and how much Alzheimer's
- Effects on driving, work and insurance that need to be thought through
- Side effects from blood pressure, cholesterol or blood-thinning medicines
- Family disagreement about the diagnosis or about care
- A wrong or incomplete first diagnosis that is later revised
- A further stroke during or soon after assessment, needing urgent care
The key uncertainty is that vascular dementia and Alzheimer's disease often occur together, so the exact picture may not be clear-cut. The most important action is controlling the risk factors that damage blood vessels. A sudden new weakness, drooping face or slurred speech is a possible stroke and is a 999 emergency, not something to wait on.
Published figures to discuss
The assessment itself is not a procedure with complication rates. The main uncertainty is diagnostic: vascular dementia and Alzheimer's disease often coexist, and the contribution of each is not always clear. Figures for how many people develop dementia after a stroke vary widely between studies depending on who is included and how it is measured, so we have not stated a fixed percentage here.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Stepwise decline or stroke symptoms missed | Important | Sudden weakness, speech trouble, vision loss or acute confusion needs urgent stroke/TIA assessment. | NHS — Vascular dementianhs.ukSource-linked context |
| Vascular risk factors not treated | Avoidable | Blood pressure, diabetes, cholesterol, smoking, atrial fibrillation and physical activity can affect future brain injury risk. | NHS — Vascular dementianhs.ukSource-linked context |
| Mixed dementia overlooked | Common | Vascular changes and Alzheimer's disease frequently coexist, changing medication and support discussions. | Guide sourcesClinical context |
| Function and mood underestimated | Common | Executive dysfunction, apathy and depression can be more disabling than memory loss alone. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is no physical recovery from the assessment. What matters afterwards is understanding the diagnosis, getting risk factors treated, accessing support and planning ahead.
- Feeling tired or low for a day or two after a long assessment
- Needing time to take in the diagnosis and the plan
- Starting or adjusting medicines for blood pressure, cholesterol or heart rhythm
- Symptoms that stay fairly steady for periods, rather than always declining smoothly
- Mixed emotions in the person and family — all understandable
Aftercare
- Make sure you understand the diagnosis and the plan; ask for it in writing if that helps.
- Take medicines for blood pressure, diabetes, cholesterol or heart rhythm as directed, as these protect the brain.
- Attend reviews so risk factors and symptoms can be checked.
- Support healthy changes where possible — stopping smoking, activity, diet — with your clinician's advice.
- Treat other health problems and look after mood, hearing and eyesight, as these affect thinking.
- Look into support such as an Admiral Nurse or local dementia adviser for the person and family.
- Tell the driver licensing authority and your insurer if you are advised this affects driving — this is a legal duty. The authority is the DVLA if you live in England, Scotland or Wales, or the DVA if you live in Northern Ireland.
- Plan ahead while decisions can be made: lasting power of attorney, finances and future wishes.
- Bring a relative or close friend to appointments
- Full list of current medicines, including blood pressure and heart medicines
- Notes on how and when symptoms started
- Details of any stroke, mini-strokes or heart problems
- Glasses and hearing aids
- Questions written down in advance
- Recent blood pressure readings, if you have them
⚠ Get urgent help if…
- Sudden weakness, facial drooping, slurred speech or loss of vision — call 999, as this could be a stroke
- Sudden confusion or a clear change over hours or days — this may be delirium from illness or a new stroke and needs urgent help
- A sudden severe headache unlike any before
- Chest pain, palpitations or fainting — seek urgent medical advice
- Thoughts of harming yourself, or feeling unable to go on — contact your GP urgently or call Samaritans on 116 123; call 999 if there is immediate danger
- Severe distress or agitation that cannot be settled
- Becoming unsafe alone — for example getting lost or leaving the gas on
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your psychiatrist gives you.
Results & realistic expectations
A good outcome from assessment is a clear, honest explanation: whether this is vascular dementia, how much may be due to Alzheimer's as well, and which risk factors can be treated to protect the brain. Unlike some types, there is a real opportunity here to reduce the chance of further damage by controlling blood pressure, diabetes, cholesterol and heart rhythm.
The limits matter too. Treating risk factors can help protect against further harm but cannot reverse damage already done, and it cannot guarantee that the condition will not progress. The picture is read from everything together and may need review over time.
Vascular dementia often progresses in steps rather than smoothly, with periods of stability and then a further decline, sometimes after a new stroke. Good control of risk factors aims to slow further damage. The plan is reviewed over time, and as the condition advances the focus shifts towards comfort, dignity, support and planning.
Related tests, treatments or support
Vascular dementia assessment is closely combined with checking and treating the heart and circulation — blood pressure, heart rhythm, cholesterol and diabetes — because these are central to the condition. Where Alzheimer's features are also present, the assessment overlaps with that of mixed dementia.
Follow-up & long-term care
After diagnosis, a letter usually goes to your GP, who often leads on managing risk factors, and the clinic agrees who will follow you up. Reviews check symptoms, blood pressure, blood sugar, cholesterol and heart rhythm. You should be told who to contact between appointments and how to get support.
- Regular checks of blood pressure, blood sugar, cholesterol and heart rhythm
- Taking medicines that protect the brain and circulation as directed
- Support to stop smoking and to stay as active as possible, where suitable
- Review of symptoms, mood, safety and daily living
- Ongoing support for the person and family, adjusted as needs change
Repeat, follow-on and what comes next
- The diagnosis may be revised once the scan and blood results are back, or as symptoms change.
- Vascular dementia often progresses in steps, so a further decline after a new stroke may prompt review.
- The balance between vascular and Alzheimer's features may become clearer over time, changing the label to mixed dementia.
- Risk-factor treatment is adjusted over time rather than fixed at diagnosis.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A clear, compassionate explanation of the diagnosis and an honest account of what treatment can achieve.
- A named point of contact and a way to ask questions between appointments.
- A clear plan, usually with the GP, for managing blood pressure, diabetes, cholesterol and heart rhythm.
- Signposting to support for the person and family, such as Admiral Nurses or a local dementia adviser.
- Support with planning ahead and honest, kind advice on driving and legal matters.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- Length and number of appointments, and whether a consultant leads the assessment
- The cognitive tests used and any detailed psychological testing
- Blood tests, blood pressure and heart-rhythm checks
- Whether a brain scan (CT or MRI) is arranged, and who reports it
- Heart and circulation investigations where needed
- Follow-up appointments, ongoing management of risk factors, and reports or letters
- The consultant or clinician's fee for assessment and follow-up
- Cognitive testing and any psychology input
- Blood tests, heart-rhythm and blood-pressure checks, and who interprets them
- Any scan fee and the reporting fee
- Ongoing management of risk factors and prescribing arrangements
- Reports, letters and communication with your GP
- What happens, and what it costs, if the diagnosis is unclear or further tests are needed
On the NHS? Assessment for vascular dementia and the management of vascular risk factors are available on the NHS when clinically indicated; private routes are mostly used for speed, choice or a second opinion.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Not being told that treating risk factors protects against further damage but cannot reverse what has happened.
- A diagnosis from a brief test alone, without a scan or a collateral history.
- Not explaining that vascular dementia and Alzheimer's often coexist.
- No clear plan for who manages blood pressure, diabetes and heart rhythm.
- Not being told what the diagnosis means for driving, work and insurance, or who sees the report.
Marketing red flags
- Claims that a treatment can reverse vascular dementia or 'restore' lost function.
- Supplements, infusions or unproven treatments promoted as reversing brain damage.
- A scan sold as a stand-alone diagnosis without a proper clinical assessment.
- Downplaying the importance of controlling blood pressure, diabetes and heart rhythm.
Choosing a specialist safely
- Check the psychiatrist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the psychiatrist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good psychiatrist will welcome every one of these.
- How confident are you that this is vascular dementia, and could Alzheimer's be involved too?
- Which of my risk factors can we treat to help protect my brain?
- Is my blood pressure, blood sugar, cholesterol and heart rhythm well controlled?
- What did the brain scan show?
- What support is available for me and my family, and who do I contact?
- What does this mean for driving, work and planning ahead?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the psychiatrist who carries out my test, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this test not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Is there a cure for vascular dementia?
How is it different from Alzheimer's disease?
Why is a brain scan so important here?
Can I get the assessment on the NHS?
Do the Alzheimer's medicines help vascular dementia?
Will this affect my driving?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: NHS — Vascular dementia Alzheimer's Society — Types of vascular dementia NICE NG97 — Dementia: assessment, management and support Dementia UK — How is dementia diagnosed? Royal College of Psychiatrists — Memory problems and dementia NHS — Tests for diagnosing dementia DVLA — Assessing fitness to drive DVA Northern Ireland — Tell DVA about a medical condition
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
Related guides: Memory assessment (memory clinic) · Alzheimer's disease assessment and treatment · Mixed dementia assessment · Frontotemporal dementia assessment · Lewy body dementia assessment