I was diagnosed with ADHD a few years back... Just shortly before I turned 40.
I'm lucky that seems to be the only thing my brain struggles with. After about a year and a half, I found a combination of drugs that works for me, and I've been doing ok, as far as my ability to think, concentrate, or focus at work goes....
I'm in Canada, so we have similar issues with our social support programs. I know this because, while I got off light in my diagnosis, my brother has far more severe ADHD symptoms, and he has other medical complications that make treatments difficult at best. I won't go into his medical issues since that's not my story to tell, but from a high level, most of the problems root in the fact that he was diagnosed with type 1 diabetes in his mid-teens.....
He's actually registered in the disability system and I've helped, or at least tried to help him navigate it and get to a point where he can do anything and get any support at all. Needless to say, I get it. Our system isn't super different from the UK system. Personally I think it's shameful that we give such a hard time to people with diagnosed disabilities, it's not like those disabilities are going to... Idk, stop being a thing? It's kind of a life long problem.
I'm lucky in the fact that if I continue taking the meds, I'm more or less "normal". I have a steady job and I help my brother as I am able.
None of this is to detract, compare or "one-up" your challenges. The purpose to saying all of this is that I get it, I emphasize with your situation. I hope you are doing better and that the UK disability system stops fucking up your coverage so you can get back to living your life.
All the best, from across the ocean.
Ha. I'm on them. The meds I take for ADHD are classifiably also anti depressants.
What now, Poindexter?