Dementia And Dementia

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Too often, patients and their family members are told by their doctors that the patient has been diagnosed with “a little bit of dementia.” They leave the doctor’s visit with a feeling of relief that at least they don’t have Alzheimer’s disease (AD). There is great confusion about the difference between “dementia” and “AD.” The confusion is felt on the part of patients, family members, the media, and even healthcare providers. This article provides information to reduce the confusion by defining and describing these two common and often poorly understood terms. What is the difference between Alzheimer's disease and dementia? “Dementia” is a term that has replaced a more out-of-date word, “senility,” to refer to cognitive changes…show more content…
These cognitive problems are a noticeable change compared to the person’s cognitive functioning earlier in life and are severe enough to get in the way of normal daily living, such as social and occupational activities. A good analogy to the term dementia is “fever.” Fever refers to an elevated temperature, indicating that a person is sick. But it does not give any information about what is causing the sickness. In the same way, dementia means that there is something wrong with a person’s brain, but it does not provide any information about what is causing the memory or cognitive difficulties. Dementia is not a disease; it is the clinical presentation or symptoms of a disease. There are many possible causes of dementia. Some causes are reversible, such as certain thyroid conditions or vitamin deficiencies. If these underlying problems are identified and treated, then the dementia reverses and the person can return to normal functioning. However, most causes of dementia are not reversible. Rather, they are degenerative diseases of the brain that get worse over time. The most common cause of dementia is AD, accounting for as many as 70-80% of all cases of…show more content…
Most of the time, dementia is caused by the specific brain disease, AD. However, some uncommon degenerative causes of dementia include vascular dementia (also referred to as multi-infarct dementia), frontotemporal dementia, Lewy Body disease, and chronic traumatic encephalopathy. Contrary to what some people may think, dementia is not a less severe problem, with AD being a more severe problem. There is not a continuum with dementia on one side and AD at the extreme. Rather, there can be early or mild stages of AD, which then progress to moderate and severe stages of the disease. One reason for the confusion about dementia and AD is that it is not possible to diagnose AD with 100% accuracy while someone is alive. Rather, AD can only truly be diagnosed after death, upon autopsy when the brain tissue is carefully examined by a specialized doctor referred to as a

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