At what stage of Alzheimer's disease does the resident forget their own address and struggle to recall their high school name?

In the context of Alzheimer's disease, Stage 5 is characterized by moderate to severe cognitive decline. During this stage, individuals often face significant memory challenges, such as forgetting personal details like their own address or the name of their high school. This reflects a deeper cognitive impairment where the person may still be able to remember some information about their life but struggles with recalling more complex or less frequently accessed memories.

At this stage, individuals may still be able to perform some daily tasks with assistance and may be aware of their cognitive decline, which can be distressing. However, fundamental information that was once second nature, such as address or educational history, becomes increasingly difficult to recall.

Other stages, like 4, indicate a milder form of cognitive decline, where individuals may experience increased forgetfulness and difficulty with complex tasks, but they are typically better able to recall personal information. Stages 3 and 6 entail varying levels of cognitive impairment as well, but Stage 5 specifically aligns with the loss of personal details mentioned in the question.