Well, sometimes I make silly assumptions, my apologies.
No, I can see it is a problem, and don't have any wonderful solutions to the hair thing. Others here have been faced with it, and strangely nobody has mentioned wigs, which may be because they are expensive and uncomfortable long-term.
That being said I've seen one recently that was lightweight (a mesh) and looked presentable, no idea of cost though as though DVA. Is this something you can discuss with your local cancer council? They offer professional advice and are used to the problem, sometimes even have wig libraries.
Being an ambo, volunteer or otherwise, can leave a great shadow, I was a policeman, though not a first responder. I too did not relay my work experiences in detail and kept on going until I was invalided out, so can sympathize. Only mentioned the worst one to my psychiatrist very many years after.
The physical limitations you mention on sound and print are a pain, may I ask if you can tolerate audio-books? As for the memory it too is a right pain, there is actually an old thread here about PTSD and memory problems:
PTSD & Trauma /
Poor concentration due to PTSD
Not active, was started by a serving copper who no longer posts, but would show you others have hassles and try to deal with them. Consensus: smartphones rule:)
That psych who threatened scheduling frankly does not sound all that much of a loss, I'd be tempted to bolt too. With your GP why not ask which areas specifically he beleives things are not being examined? Maybe you can sort that one out. Before now I've said "OK you are probably right but I'm not talking about that at this time" or words to that effect and it seems to have been accepted. Maybe I've been luckier with professionals than you.
Some pharmacies will dole out a day's ration of meds for precisely the sort of problem you are facing with trust issues.
I guess I'm just offering up options you may well have considered (you are certainly as capable as me) , all I can do is rely upon your patience as I wade though them.
I've improved out of sight, though it took time, and I'd hope you will too.
Do you think all new work situations are equally threatening for you at the moment?