Illustration of brain cells representing dementia

Dementia: Symptoms, Causes, Types, Diagnosis & Treatment

Dementia is an umbrella term for a decline in memory, thinking, reasoning or other cognitive abilities that becomes severe enough to interfere with everyday life. It is not one specific disease. Instead, many different diseases and conditions can cause dementia,

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Brain scan illustrating Alzheimer’s disease

Alzheimer’s Disease: Symptoms, Causes, Stages & Treatment

Alzheimer’s disease is a progressive brain disorder that gradually affects memory, thinking, behavior and a person’s ability to manage everyday life. It is the most common cause of dementia, particularly in older adults, although Alzheimer’s is not considered a normal

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Illustration of Lewy body dementia and abnormal protein deposits in the brain

Lewy Body Dementia: Symptoms, Causes, Diagnosis & Treatment

Lewy body dementia (LBD) is a progressive brain disorder that can affect thinking, movement, sleep, behavior, mood and automatic body functions such as blood pressure and digestion. It is associated with abnormal deposits of a protein called alpha-synuclein inside brain

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Dementia Information & Support

ReaDementia provides clear, practical information for people living with dementia, families and caregivers. Explore our guides on symptoms, diagnosis, treatment, care and everyday life.

Not sure where to begin? Start with one of these popular pathways.

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Why Trust ReaDementia?

We aim to provide clear, useful and carefully researched dementia information for individuals, families and caregivers.

Editorial Process

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Professional Team

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About ReaDementia

Learn more about ReaDementia, our purpose and the information we provide for families and caregivers.

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Dementia Care Resources

Practical information can make everyday care easier. Explore our guides for families and caregivers covering support, communication, activities, safety and changing care needs.

Care & Support

Find practical guidance for supporting someone living with dementia at home and as their needs change.

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Activities

Discover meaningful activities that can encourage engagement, enjoyment and social connection.

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Communication

Learn practical ways to make conversations clearer, calmer and more supportive as dementia progresses.

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Popular Dementia Guides

Explore some of our most useful guides covering diagnosis, symptoms, everyday care and activities for people living with dementia.

Cognitive Tests for Dementia

Learn about the tests doctors may use to assess memory, thinking and other cognitive abilities.

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When Someone Stops Eating

Understand why eating may become difficult and what families and caregivers can do to help.

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Lewy Body Dementia Stages

Learn how Lewy body dementia may progress and how support needs can change over time.

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Vascular Dementia Symptoms

Explore common cognitive, behavioral and physical symptoms associated with vascular dementia.

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Dementia and Bathing

Practical ideas for making bathing safer, calmer and more comfortable for someone with dementia.

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Activities for Dementia

Discover meaningful group activities that can encourage participation, enjoyment and connection.

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Free dementia guide for families and caregivers

Free Dementia Guide

Looking for a clear introduction to dementia? Our free guide brings together practical information for families, caregivers and anyone wanting to better understand the condition.

It covers key topics including symptoms, diagnosis, common types of dementia, treatment, care and everyday support.

Download the Free Guide