Dementia Help Posted or Updated on 19 May 2025

What Is Dementia?

Dementia is an umbrella term for a range of progressive conditions that affect the brain.

Each type of dementia stops a person’s brain cells (neurones) working properly in specific areas, affecting their ability to remember, think and speak.

Doctors typically use the word ‘‘dementia’’ to describe common symptoms – such as memory loss, confusion, and problems with speech and understanding – that get worse over time.

Dementia can affect a person at any age but it’s more common in people over the age of 65.

There are over 200 subtypes of dementia. The most common are Alzheimer’s disease, vascular dementia, Lewy body dementia, frontotemporal dementia and mixed dementia.

By 2025, it’s estimated that over one million people in the UK will have a diagnosis of dementia – and almost all of us will know someone living with the condition. Our dementia specialist Admiral Nurses explain the facts you need to know.

Please visit https://www.dementiauk.org/get-support/ for more information from Dementia UK

National Dementia Helpline: 0300 222 11 22 
Our helpline advisers are here for you. 

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