Thanks for your welcomes and input.

I think keeping a log sounds like a great idea.

I've also wondered about that little area of atrophy and how it might relate to the concussions. One occurred before I met my husband, and the other while we were dating (he fell off of a 200-foot cliff), so I have no way of knowing what his cognition was before.

Now that I'm thinking about things, I do realize that he's always had a degree of problems in the areas where he seems to be "developing" problems now. But, the degree has gradually increased to the point where I finally began to notice.

So, I'm not really sure if the problem is one he's had all along, and it's simply progressing with age, or whether it's something new.

I guess this is why our primary care doc said she was "baffled."