Dementia is considered a late-life disease because it tends to develop mostly in elderly people. About 5% to 8% of all people over the age of 65 have some form of dementia, and this number doubles every five years above that age. It is estimated that as many as half of people in their 80s suffer from dementia.
Which Dementias Are Treatable?
Dementia due to long-term substance abuse.
Tumors that can be removed.
Subdural hematoma, accumulation of blood beneath the outer covering of the brain as a result of a broken blood vessel, usually caused by head injury.