Earlier quoted context omitted.
Yeah, sounds terrible. I wonder what medical treatment he's seeking? My understanding is that there wasn't much you can do other than rest https://www.mayoclinic.org/diseases-conditions/concussion/di... but there must be something hopeful if he's willing to move states to seek it.
I went to Mayo after a stroke. I was (am?) a fairly high iq person, national merit scholarship, 99.8%tile SAT scores, etc. Degree in mathematics, compsci. I had a stroke in my 30s, and it was thankfully mild (slight dysarthria that went away in a month) but I'm certain it impacted my intelligence and ability to concentrate. I can't focus/concentrate for long sessions anymore. I used to be able study without problem u…
I have no idea and wouldn't claim this is true for you in your situation though. My partner has brain cancer and I wish I'd tried this earlier.