The word “beyond” is doing some heavy lifting in that sentence (I say as someone with the same diagnosis)
You end up with symptoms of a lot of different mental disorders that have a different underlying cause than normal for those disorders.
For example, I have a rather severe impairment of executive function. I have a diagnosis of ADHD, but my internal experience doesn’t seem to match what I’ve read about other people with ADHD and none of the first or second line treatments for ADHD work on me.
I also have a significant overlap in the symptoms of autism, but I do not have the internal experience of someone who is autistic.
I suspected that it was from the APs, so I looked for research and found a few papers that showed links between APs and gray matter loss. So, I stopped taking the APs (the side-effects were really bad, anyway), but my mind hasn't really recovered though.
It's extremely frustrating. I have to constantly write 'to do' lists. And, I have to put my thinking down on paper. I used to be able to hold big models in my mind and just code. It's slowed down my productivity probably 70%.
I also had some success with wearing a snug fitting balaclava. It's odd, but it worked.
Nicotine helped, but I now have NAFLD and nicotine might be a factor in it so I quit.
Modafinil really worked, despite leaving my body feeling drained and sore. I didn't want to keep taking it though.