Nigel, let me set the picture. I divorced my first wife. Then I left New York and moved to Florida with my new wife. My first wife and her husband moved to Florida, one town away. My new wife said; I can’t believe this. (ouch)

Her husband was out of town on a business trip. My daughter called and told me something is wrong with Mom. We went to see what had happened.
Nigel, she seemed OK, but parts of her memory were gone, her symptoms were very much like yours. That was 30 years ago and she is in good health; her memory came back shortly after.

Great to see you back, John C.

PS, the strange thing about this story is that she never lost the part of her memory the dealt with the bad things I did in our marriage. (aaaaaaaaah)