Types of Dementia
Dementia, in and of itself, is not a disease but rather a "syndrome." A syndrome is a group of symptoms that occur simultaneously (together) and chronically (over a long period of time). In dementia, symptoms may be more obvious on some days rather than others but, as a rule, once a symptom occurs it can be expected reoccur in the future. The majority of dementias are age-related, meaning that they occur in older individuals.
The symptoms of dementia are related to a decline in the victim's so-called cognitive functions. These functions include processes such as short and long term memory, reasoning ability, or the ability to understand new information. Although there are many different etiologies (causes) of dementia, the syndrome can be categorized based on the general area of the central nervous system that is being affected: the cerebral cortex or the subcortical structures.
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