Jonathan Edwards
Senior Member (Voting Rights)
The model is behavioral, implying something directly under someone's control. This is not a characteristic of mental illness, over which thoughts and beliefs play little role. It's not really about psychological either, it's about behavior, about conscious choices we make and can adjust.
This is the reason why when I first heard of CBT for ME it seemed to me to be directly in conflict with the principles of psychiatry.
Psychiatry actually divides illness into two types: neuroses and psychoses.
Neuroses are thought of as what you call behavioural illnesses. They involve distortions of normal thoughts of a sort that anyone can reasonably see themselves perhaps being subject to. The illness is understandable and rational. We all get sad when things are bad. Neurotic depression is getting a bit too sad, in appropriate circumstances perhaps but over the top. Because neuroses are thought of as within the realm of rationality they are believed to be amenable to counselling and rational proposals for restoring normal behaviour.
Psychoses, in contrast, involve distortions of thoughts that normal people would find hard to see themselves ever being subject to. The illness is not understandable and the thoughts are irrational. Beliefs and emotions bear no relation to the reality of surroundings. As a result psychoses are thought of as not amenable to rational proposals or counselling.
If ME/CFS is an illness of unhelpful beliefs about being unable to return to normal activity it seems pretty certain to be a psychosis because such beliefs would be quite irrational in the circumstances. And psychosis is not supposed to respond to CBT. The few studies that have been done seem to confirm that, although people keep trying it seems.
Put more simply, if people were really mad enough to think they were desperately ill when in fact they are fine, it is pretty unlikely that a lady with a blue cardigan is going to talk them out of it.