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The Different Kinds of Dementia

Cortical Dementia
Cortical dementia refers to dementia in which brain damage primarily affects the brain's cortex, or outer layer. Cortical dementias tend to cause problems with memory, language, thinking, and social behavior.
Subcortical Dementia
Subcortical dementia is dementia that affects parts of the brain below the cortex. This dementia type tends to cause changes in emotions and movement in addition to problems with memory. One example of this dementia type is Binswanger's disease.
Progressive Dementia
Progressive dementia is dementia that gets worse over time, gradually interfering with more and more cognitive abilities. Lewy body dementia is an example of a progressive dementia.
Primary Dementia
Primary dementia is dementia (such as Alzheimer's disease) that does not result from any other disease.
Secondary Dementia
Secondary dementia is dementia that occurs as a result of a physical disease or injury.

Treatable Versus Untreatable Dementia

Another classification system that is used for dementia separates the causes of dementia into treatable or untreatable.
Treatable Dementia
About 10 percent of conditions that cause dementia are treatable. With treatment, the dementia can either be reversed or at least halted. Examples of conditions that cause treatable cases of dementia include:
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Types of Dementia

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