Dementia is an umbrella term used to describe a range of conditions affecting the brain which cause problems, in most cases progressive, in thinking, reasoning memory and other cognitive tasks and associated with changes in mood and behaviour. Dementia affects a person’s ability to carry out day to day tasks normally. There are many different types of dementia, of which Alzheimer’s disease, vascular dementia, Lewy body dementia and Fronto-temporal dementia are the most common. Some people may have a combination of different types of dementia, often called mixed dementia. Regardless of which type is diagnosed, each person will experience their dementia in their own unique way.