Dementia is a collective term for the condition of a number of diseases, which are characterized by permanent impairment of mental functions. Dementia is not a specific disease because many different diseases can cause dementia. Approximately 200 different diseases can cause dementia or cognitive disorders. Alzheimer’s disease is the most common cause of dementia. About 60% of people with dementia have Alzheimer’s disease.
As already mentioned, dementia is a disease, not a consequence of getting old. It is a myth that dementia is a natural consequence of getting old; however, the risk of dementia increases with age. Only a few diseases that cause dementia can be cured. However, several diseases can be treated to some extent, so it is important to have a diagnosis at an early stage.