… the first signs (in my experience) are that stray words and names pop into his head utterly unbidden at the oddest times—like when he's tying his shoes, or lining up a downhill putt.
Just for instance:
Kukla, Fran and Ollie
John Buccigross (pronounced butch-a-gras)
And many more. (I've been trying to make a list for a year, but I have a hard time remembering them when I'm back at the work desk, so out-of-left-field are they.)
Two questions: Does this happen to you? Should I see a brain surgeon, or a shrink?