Years before Elizabeth was diagnosed with Alzheimer’s she began not knowing what day it was. I do not now recall how this corresponded to the beginning of memory lapses. I tried several strategies to help her know the day and date – like calendars prominently on the counter with all the prior days of the month crossed out.
At some point, I began to wonder, how do I know what day it is? I paid attention to how I determine the day when I get up in the morning. I saw that, in fact, it is one of the first thoughts I usually have, and I watched the process take place in my brain. It became clear that my knowing the day is based on memory. I recall a few details from the prior day until they make clear what day it was yesterday or they may be memories of activities I had planned for today. Anyway, it became clear, knowing what day it is requires memories of yesterday.
So, it is understandable that not knowing what day it is may be an early indication of dementia.


