Most of the comments support the fact that there is nothing that works, including, maybe especially so, the psychobehavioral clinics:
“I also think that the specialist clinics do almost nothing. […] They try B12 injections and nothing has an effect […] It’s been a great relief […] to send them to these clinics. […] they have disappeared from us for a while […]. But the way I see it they still come back, most of them, and have about the same plan” (PCC1, interview 1, participant 4)
Indeed they do nothing. Some comments talk about frustration at nothing working, but that is precisely how things work when you have nothing effective. Trying things that don't work is not the same thing as trying things that might work. You could sing all the songs ever written, forward and backward, and it wouldn't count as trying, because doing this is entirely irrelevant to the problem. The junk psychobehavioral pseudoscience is no different than this, it has zero chance of working.
It's definitely true that they have nothing. As a choice. Because this is simply not seen as a problem worth solving, and useless nonsense has been obsessively asserted to work even though it obviously doesn't. This will not get solved until it's taken seriously, and with competent tools and methods. This explicitly excludes all of clinical psychology, which is the universal hammer everyone ineffectually tries to deal with it.
This actually warrants turning back one false criticism that is laid on us: quit hoping that a magical solution will be handed to you, it won't happen, you have to work for it, and if you keep refusing to work on the problem as it is, then you are not going to achieve anything.
In a nutshell: quit whining or doing useless things and get to work. Because this is all still happening after decades of pushing the same junk pseudoscience onto the problem. Quit doing what doesn't work, damnit.