If someone with dementia is distressed, it is often because they are trying to communicate something that they are unable to express. Possible causes include:
Feeling disorientated or frightened – for example, the person may not recognise the place that they are in as their home, or might believe someone is trying to harm them.
Feeling anxious or depressed – it is often believed that people with dementia cannot experience anxiety or depression, but this is not the case. However, they may be unable to express these feelings, leading to greater distress.
Unmet needs – the person might be hungry or thirsty, or too hot or cold. They might be in pain, need the toilet, want to stretch their legs, or be feeling bored.
Changes in routine such as a hospital appointment, a family gathering, or visitors to their home.
Sundowning – this is where a person with dementia feels more confused and distressed in the evening.
Past life events – people who have experienced traumatic events like war, terrorism or a serious accident might relive these situations as their dementia progresses.