Definition of Dementia:
Dementia is a group of diseases that cause a permanent decline of a persons ability to think, reason and manage their own life. Dementia is caused by biological processes in the brain that damage brain cells.
The Alzheimer’s Society definition of dementia is very similar:
The term dementia describes a set of symptoms that may include memory loss and difficulties with thinking, problem solving or language.
Dementia is caused when the brain is damaged by diseases such as Alzheimer’s Disease, or a series of strokes. Dementia is progressive which means the symptoms will gradually get worse. Dementia is caused by physical changes in the structure of the brain.