What is dementia?
Dementia refers to a large group of conditions that cause progressive memory loss, a decline in language ability, and a regression in thinking capacity.
Some types of dementia are reversible. For example, dementia caused by an underlying medical condition typically improves after you get treatment for that condition.
However, progressive dementias develop as brain neurons (nerve cells) die. The ongoing destruction of brain cells leads to significant behavioral, emotional, and personality changes.
Eventually, declining brain function affects social abilities and makes it hard or impossible to perform routine daily activities like paying bills, getting dressed, and eating.