I would just remove "terminal" in that question altogether, because untreatable and insufferable is really all that counts. Whether something is terminal or not is likely not relevant. In fact, if it isn't terminal it might actually be worse, since if it is terminal then death would occur and prevent any further suffering after that end point.
With what I am suffering from there is no end point. My end point would, sadly, have to be chosen by me and manually carried out. But because it seems I no longer have access to barbiturates (I used to have pentobarbital and vinylbarbital in quantities sufficient enough to realistically kill a horse) since the vinylbarbital was mistakenly put out in a rubbish box when I last moved to a new apartment, I guess I'm screwed.
The pentobarbital I ended up destroying. I was about to drink it back in 2020 (I'm a musician who was terrified I was going deaf, at least in one ear and I guess I probably am) but I changed my mind and down the toilet it went.
When I later went to look for the vinylbarbital I had a sudden epiphany that this backup option was missing. Then I realised that it was lost and gone forever because a box containing other junk was not at my new apartment that I moved into in 2015. Unless by happenstance I find another source I am pretty much at the mercy of the institutions and I know for a fact that they will never help me. They would prefer I use a terrible and/or painful method. Oh yeah, in 2015 I could of invested in Ethereum and made crazy, crazy, crazy money. Oh no, I didn't do that, so stemcells are out of the question, I hear there quite good for treating shit like this but I don't know. Wish I had millions to try and see if they would work. Funny how the government complains about unethical stemcells are when they are allowing people to suffer like this for no good reason.
Indeed it is unconscionable.