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Neurology

Dementia

Dementia is a set of symptoms that can include memory loss and difficulties with thinking and language. It mainly affects older people but is not a normal part of ageing, and support is available.

At a glance

  • Dementia affects memory, thinking and communication.
  • It is not a normal part of getting older.
  • A diagnosis opens the door to treatment, support and planning.
On this page (5 sections)

Overview

Dementia is a group of symptoms caused by different conditions that affect the brain, the most common being Alzheimer’s disease. It mainly affects older people, but it is not a normal part of ageing [1].

Common early symptoms

Early signs can include memory problems, difficulty concentrating or following conversations, problems with language or judgement, and changes in mood. Symptoms are usually mild at first and get worse over time [1].

Why a diagnosis helps

Getting a diagnosis means a person can get the right treatment and support, and plan for the future. A GP can carry out an initial assessment and refer to a specialist [1].

Treatment and support

There is no cure for most types of dementia, but treatments, therapies and support can help people live well for as long as possible. Charities such as the Alzheimer’s Society and Dementia UK also offer support [1].

When to see a doctor

See a GP if you are worried about memory problems or other symptoms of dementia — in yourself or someone else — so the cause can be checked [1].

Get medical helpIf you have severe or worsening symptoms, seek medical help without delay. In an emergency call 999.

Sources

  1. NHS. Dementia (opens in new tab) Accessed 12 August 2026.

About this page

Written by
Consumer Health editorial team
Medical review
Pending — this page has not yet been reviewed by a named clinician. Read our medical review policy.
Last updated
August 2026
Next review due
August 2027

Important: This information is for general guidance only and does not replace professional medical advice. It is not intended to diagnose or treat any condition. Always speak to a qualified healthcare professional — such as your GP or pharmacist — for advice about your individual circumstances, and do not start, stop or change any prescribed treatment based only on this page. If you think you are having a medical emergency, call 999. Consumer Health is an independent health-information resource and is not the NHS or a government body.

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