I had one scary moment a year or two back, post-migraine. The phone went, and I picked it up, knowing I was expected to say a word. But I couldn't for the life of me remember what that word was.
I stared at the thing in my hand - phone, yes, that's the word! - and willed my brain to come up with the thing I was supposed to say.
Then my dad said, "Hello? Hello? Are you there?"
"Hello!"
I must have shouted, because he asked if I was all right, and I said, "Hello, that's what I was trying to say."
First time it ever happened, that a migraine (or the shadow thereof) wiped something so simple from my brain, but it's a bloody scary thing for a writer, to lose words like that.
Occasionally I point at things and say to people, "Could you put the...thing...on? Oh, what's it called? Kettle!" or "Would you pass me my...oh, those things you put in a door...what are they called again? Keys!"
I know the feeling will pass and my memories will come back, but I dread to think how I'd cope if such a condition were permanent and terminal.
Maybe I wouldn't.