The word ‘dementia’ describes a set of symptoms that may include memory loss and difficulties with thinking, problem-solving or language.
These changes are often small to start with, but for someone with dementia they have become severe enough to affect daily life.
A person with dementia may also experience changes in their mood or behaviour.
Dementia is caused when the brain is damaged by diseases, such as Alzheimer’s disease or a series of strokes. Alzheimer’s disease is the most common cause of dementia, but not the only one.