Changes in perception and hallucinations in dementia
The content below is reflective of our leaflet.
Our senses – hearing, sight, smell, taste and touch – help us understand the world around us.
But in many people with dementia, the brain misinterprets the information from their senses. This can cause changes in perception, where they experience things differently from other people.
Changes in perception may also be caused by physical changes, such as their sight or hearing getting worse as they get older.
Some people with dementia have hallucinations. This is where they experience something that is not really happening, like hearing voices (auditory hallucinations) or seeing things that aren’t there (visual hallucinations). Visual hallucinations are more common in people with Lewy body dementia.
If you’re concerned about changes in perception or hallucinations in a person with dementia, make an appointment with their GP. They can help to identify and treat any possible physical causes. If the person has a specialist dementia doctor or Admiral Nurse, they can give you advice on how to help with these difficulties.