I didn't say that some don't have a physical cause. > CFS/ME is a diagnosis based on real, observable behavior. That's not a meaningful diagnosis. It basicall

I didn't say that some don't have a physical cause. > CFS/ME is a diagnosis based on real, observable behavior. That's not a meaningful diagnosis. It basically comes down to something like "people who report this set of symptoms, and who don't test positive for anything we know about". Medicine is full of this stuff. They used to just put it in Latin. Because then it sounded like they knew what it was. Doing reliable science with human subjects is hard. And when you don't actually have a reliable test for something, it's impossible. I'm not saying that any of these diseases diagnosed as CFS/ME aren't real. I'm just arguing that it's hard to assess treatments when you have such a poorly defined diagnosis.