@"Michele B"
I can tell you for sure that Tamoxifen plays with your brain especially your speech. In the first year of taking Tamoxifen I was that concerned about my speech, memory, lack of concentration, etc I demanded a brain MRI to make sure there was nothing nasty going on in there. The doctors were telling me Tamoxifen does not cause this but I knew otherwise. On the drug, brain fog, poor speech etc off the drug, no problems after a few days. It wasn't really hard to work out.
Like you, they found something on the MRI (a vascular blush I think it was called) totally unrelated to anything else and apparently very common, rarely causes any issues and is generally only discovered while looking for something else.
It takes under 5 minutes to find a dozen articles on Tamoxifen and it's affect on cognitive funtioning and it gets even worse if you've had chemo as well.
The crosswords, elevate ap, sudoku etc definitely help as does learning something new i.e guitar and uke require you to make totally new neural pathways and seems to be quite beneficial.
@Sister I want to come to your concert!
https://www.medicinenet.com/script/main/art.asp?articlekey=113252