When a person with dementia starts to behave in ways that seem out of character, some people wrongly assume this is just another symptom of the condition.

We explain the difference between normal ageing and dementia, including examples of potential symptoms for three common types of dementia - Alzheimer's disease, vascular dementia and mixed dementia .

Find out why receiving a professional diagnosis is an important step to living well with dementia. 

The symptoms of Alzheimer’s disease are generally mild to start with, but they get worse over time and start to interfere with daily life. Read how the symptoms can progress. 

This page outline the most common symptoms of dementia with Lewy bodies, many of which are unique to this type of dementia. 

The symptoms of FTD dementia vary depending on which areas of the frontal and temporal lobes are damaged.

This page contains information about other organisations that provide information and advice about changes in behaviour.

Many carers find they’re able to manage situations where the person’s behaviour changes, and that the behaviours stop over time.

As a person’s dementia progresses, they may begin to behave in ways that other people find difficult to understand.

How vascular dementia affects people varies depending on the different underlying causes and more generally from person to person. Symptoms may develop suddenly, for example after a stroke, or more gradually, such as with small vessel disease.

Read about how memory loss affects people with dementia and what the symptoms are.