I experienced to be wrongfull diagnosed. It took 7 years before a brain specialist due to a fall into a drain pipe told me that I have worked 3 times the average citizen and consequently have used up my resources.
I was given medication where my brain did not work at all - zombi. I simply had no memory at all until I stopped using this medication due to very severe head pains.
The my brain started to work again. However I had to use an invention to rebuild my memory as to old learnings and new information.
I still have to use this invention as to new learnings.