While your problems may be psychological, you should seriously consider visiting a neurologist. There are plenty of things that can cause brain fog that won't show up on an MRI or basic blood tests. Also, you should have a neurologist look at your MRI.
You really dont want to take those medicines the doc recomends unless your like are already crazy, cause ill tell ya from experience they tryed pushing meds off on me for years for fms and i nearly got divorce, not to mention couldnt functon at work , and very parinoyed, those meds are very dangerous, and most docs have never taken them so they dont know....Please be very careful, stay completly away from topomax!!!!!!!!!!!! very dangerous. But as far as the brain fog goes... have you been in any pain , or injuries? My fibromyalgia started out like that years ago, i was very smart could get up in front of the whole class and resite poems and had all the confidence in the world!!!!!!!!!! Now i couldnt remember a sentence !!! and i to forget what i am saying.............so keep track of you health issues over your life time cause things do seem to add up after a while.........look up fms.( fybro fog) hope this helps ya.....You should prob....see a doc to make sure there is not something else going on.........Your friend Penny..
Those symptoms strongly suggest that part of your mind is preoccupied with something that is not on the surface, something you are not looking at squarely, and this is causing you anxiety symptoms ( brain fog). You can treat the anxiety with anti anxiety medications or with psychotherapy, or best of all, a combination of the two.