Which assessment data suggest a person with confusion has secondary dementia or pseudodementia?

Question

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Dementia develops gradually and insidiously over many months and sometimes years.Significant confusion developing over a period of weeks suggests that the patient does not have primary dementia but instead has either pseudodementia or secondary dementia.The degree of confusion can vary in dementias and pseudodementias,and in early stages of dementia only short-term memory is typically affected (long-term memory deteriorates as the dementia progresses).Depression can present as pseudodementia because of its effect on mental functioning,but it also commonly occurs in the early stage of dementia,so simply having depressed mood does not help distinguish true dementias from pseudo- or secondary dementias.

Which Assessment Data Suggest a Person with Confusion Has Secondary