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How Is Dementia Diagnosed in the UK? What to Expect

Agression in Dementia

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If you are worried about memory changes, knowing what happens next can make things feel less daunting. This article explains how dementia is diagnosed in the UK, what families can expect, and why getting a diagnosis can help open the door to the right support.

Many families begin to worry about dementia when they notice changes in memory, behaviour or thinking in someone close to them.

One of the first questions that often follows is, “How is dementia diagnosed?”

Understanding what usually happens can make the process feel less daunting and help families take the next step with more confidence.

At The Ness Care Group, we regularly speak with families who are unsure what happens after they first raise concerns about memory changes. It is very common to feel anxious about getting things checked, especially when symptoms are still new or difficult to talk about. Knowing what to expect can make that first step feel more manageable.

What is the first step if you are worried about dementia?

If you are worried about memory problems in yourself or someone close to you, the first step is usually to speak with a GP.

The GP will normally ask about the changes that have been noticed, how long they have been happening, and whether they are affecting day to day life. They may also ask about physical health, mood, sleep, medication and general wellbeing.

This first appointment matters because memory problems are not always caused by dementia. In some cases, they may be linked to other issues such as stress, depression, sleep problems, vitamin deficiencies or medication side effects. That is why proper assessment is so important.

If you are looking for support while concerns are being explored, our support for individuals and support for families and informal carers may also be helpful.

What tests are used to diagnose dementia?

There is no single test that confirms dementia. Instead, doctors use a combination of assessments to build a clearer picture of what may be causing the symptoms.

These may include:

Memory and thinking assessments
A GP or specialist may ask a series of questions or set simple tasks to assess memory, attention, language and problem solving.

These might include:

  • remembering a short list of words
  • drawing a clock face or shapes
  • answering questions about time, date or place

Blood tests
Blood tests can help identify other health issues that may affect memory, such as vitamin deficiencies or thyroid problems.

Brain scans

Some people may be referred for a CT or MRI scan. These scans can help specialists look for changes in the brain that may be linked to dementia, while also ruling out other possible causes of symptoms.

Not everyone will need a brain scan. It depends on the individual and the wider assessment.

What happens at a memory clinic?

If further investigation is needed, a GP may refer someone to a memory clinic.

Memory clinics specialise in assessing memory and thinking difficulties in more detail. During an appointment, specialists may:

  • ask more detailed questions about symptoms
  • review medical history
  • carry out more detailed cognitive tests
  • speak with a family member or carer
  • arrange further tests or scans if needed

The aim is to build a fuller picture of what may be happening and decide whether the symptoms are linked to dementia, mild cognitive impairment, or another cause.

How long does it take to get a dementia diagnosis?

The time it takes to receive a diagnosis can vary.

Some people may get answers relatively quickly, while others may need further monitoring, more than one appointment, or additional tests before a diagnosis can be confirmed.

Waiting can be difficult, especially when families want clarity, but it is often part of making sure the assessment is accurate.

Why getting a dementia diagnosis matters

Many people feel nervous about seeking a diagnosis. Some worry about what the answer might be, while others are unsure whether getting a diagnosis would really make a difference.

In reality, getting a diagnosis can be an important step.

It can help individuals and families understand what is causing the changes they have noticed. It can also help people access the right support sooner, plan ahead with more confidence and in some cases explore treatments that may help manage symptoms.

For many families, diagnosis also opens the door to practical conversations about care, local services, and the kind of support that may be needed in the future. If you still have questions at this stage, you may find our frequently asked questions helpful.

A diagnosis does not solve everything overnight, but it can bring clarity and make it easier to take the right next steps.

Can support help before a diagnosis is confirmed?

Yes. Support can still be helpful even before a formal diagnosis is in place.

Early support can help with:

  • confidence
  • routine
  • social interaction
  • mental stimulation
  • reassurance for families

For example, Cognitive Stimulation Therapy can support memory, thinking and communication in people living with mild to moderate dementia.

Even while someone is waiting for further medical assessment, the right support can still make a meaningful difference.

How The Ness Care Group supports individuals and families

At The Ness Care Group, we support people living with mild cognitive impairment and early to mid stage dementia, as well as families who are concerned about memory changes.

Through our welcoming hubs in Exmouth, Teignmouth, Chudleigh and Kingsteignton, we offer small group sessions designed to support cognitive health, confidence and social connection.

Many families contact us when they are beginning to notice memory changes, while they are waiting for further assessment, or after a diagnosis has been given and they are looking for the right support.

You can also book a Free Assessment if you would like to talk through your situation with our team.

What should you do if you are concerned about dementia?

If you are worried about memory changes in yourself or someone close to you, speaking with a GP is usually the first step.

If you would also like to talk through your concerns or find out more about support available locally, The Ness Care Group is here to help.

You can contact us here

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FAQs

Have questions? Our Frequently Asked Questions section provides clear answers to help you get the most out of this article.