I think part of the problem is that:
Mental illness
and
Mental cause of illness
are completely different concepts.
So whether an illness is treated as 'mental' needs to be understood in either one or other way.
Schizophrenia, punch-drunk syndrome, Alzheimer's and bipolar disorder are all mental illnesses in the sense that they produce mental disturbance. However, none of them are thought to have a 'mental cause'.
A mental cause of an illness is probably a cause that involves the occurrence of thoughts. So post traumatic stress disorder is an illness with a mental cause. Anorexia nervosa might be since there seems no doubt that abnormal thoughts about body image are involved. But then the question is what causes those abnormal thoughts.
The BPS model is a model of ME having a mental cause for continued disability. Not having ME I cannot be sure but I get the strong impression that this is just not plausible as an account of the illness.
But that does not stop ME being a mental illness in the sense of an illness that affects thinking, just as Alzheimer's affects thinking - which it obviously does. So at least part of the time I tend to think that the problem is not that this is an illness that psychiatrists should not try to help with. It is just that the psychiatrists involved at present seem to have got completely the wrong end of the stick - the cause end rather than the effect end.
But then the effect on thinking in ME bears pretty little relation to problems like bipolar disorder and schizophrenia and to be honest psychiatrists are not much good at the 'brain failure' of Alzheimer's, so maybe even enlightened psychiatrists should not be involved.
I think this is very interesting to think about. I also hope that the problems of the BPS model as a whole come to light and not only for ME. We don't want the same thing happening to the next unexplained disease, it's already happening with chronic pain.
I don't really get the discussion about whether ME is psychological or not? What does that actually mean?
If ME had a mental cause, what would it look like? Would it be fear of exercise? Off course that is the model voor CBT in the PACEtrial, but that's pretty easy to debunk in most mild and moderate patients (as most people do MORE than they can). It would be called a phobia then and you would think psychiatrist would know how to diagnose it?
Do they think we have chronic stress and are therefore ill? That also already exists and it's called a burn-out. Experts in burn-out know that when you rest and stop the stress, the symptoms actually go away. So that doesn't explain it either.
When people say a disease is psychiatric, I think of a brain disease that affects thoughts and behavior. In comparison to a brain disease that affects your body, which would be a neurologic disease.
If people say this is a psychiatric disease, do they think I have some sort of psychosis where I only think I'm ill? That can't be true, because the symptoms are in my body, not my thoughts and/or behavior.
Even if it's my brain that is making me experience illness symptoms, that would be exactly the same as in a normal flu. In a normal flu it's also my brain that is making me feel the illness symptoms.
So isn't a brain disease, which affects your body automatically a neurological disease?