How do you offer a patient a treatment for something they don't believe they have?
The patient believes they have a parasite, or nanotechnology.
Medicine suggests they may have a psychological disorder.
Asking the patient to see a psychologist is not going to work because the patient isn't going to go and is going to feel (perhaps correctly?) they are being fobbed off.
I think you have to either get the patient before they get sucked into the delusional illness belief, or concentrate on the patients who are open to the treatment option. I had CFS myself, and I was very open to the idea that it was caused by stress. I've also have IBS. Doctors didn't have any useful suggestions, but I was able to eventually figure it out by myself. I think one of the problems is that doctors don't really have the time necessary to deal with conditions like these. Certainly for conditions like CFS and IBS there are a lot of patients like me who are interested in finding the actual cause of their illness. I've never talked to any Morgellon's patients, so I'm not sure what the ratio of open-minded to nutty patients is for that condition.