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| Depression of Alzheimer disease ： ウィキペディア英語版 |
Depression of Alzheimer disease
Depression is one of the most common psychiatric symptoms in Alzheimer's disease, occurring at all stages of the disease, but it often appears in a different form than other depressive disorders. In 2000, a workgroup of the U.S. National Institute of Mental Health created a set of provisional diagnostic criteria for depression of Alzheimer disease (dAD) as a separate diagnostic entity in its own right.
In 2005, psychiatrists at Johns Hopkins University School of Medicine created a set of operationalized criteria to aid the diagnosis of dAD in clinical practice.
== Causes ==
Although caregivers often feel that the fact of an Alzheimer's diagnosis must be creating depression in the affected person, there is little or no evidence that this is true. In fact, it is not clear how many people are capable of comprehending an Alzheimer's diagnosis at the time it is made. The symptoms of dAD can arise at any point during the course of Alzheimer's disease, often at a stage quite late in cognitive decline.
Numerous neurological studies have found correlations between abnormalities in the brain and depression in dementia. For dAD in particular, positron emission tomography (PET) studies have found alterations of metabolism in the right superior frontal gyrus
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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