Earlier quoted context omitted.
If you have cared for someone with dementia, this isn't so surprising. It isn't a monotonic decline with memories disappearing forever. It is like wave upon wave of changing capacity at different time scales. The general trend is deterioration, but there are frequent periods that can almost seem like remission. There is a well known daily cycle referred to as "sundowning", where the sufferer tends to come unraveled l…
> It isn't a monotonic decline with memories disappearing forever. Last time I visited my grandpa he was really far gone. The day we arrived and subsequent two days he didn't even recognize his daughter, my mom, or even recall he had one. He'd sit in the bedroom and watch the garden, and ask "who's that guy" every 15 minutes or so, as he'd forget about me in the livingroom. The last day we visited before flying home.…
Walked out the door one day said "See you later grandma" and she said "Have fun ______" and called me by my real name, called my older siblings and said go spend time, she died two days later.
Very common.