For me the fixation on NICE criteria is an issue in U.K. How much do the respected American scientists and ME & CFS drs e.g. aDavis, Peterson, Montoya and Jason recognise it or value it in relation to ME? Americans, when it comes to Oxford CFS seem to think it's irrelevant and should be scrapped as an impediment to proper ME & CFS research, how does NICE stand on the world CFS stage? Again if NICE CFS is a fatigue syndrome some would not really count or think will contribute directly, is MEGA going to put a massive tick falsely against the "doing our bit on the CFS/MEfront" box as many would argue uk CFS service and research so far has.
There is quite a lot of misunderstanding about what is termed the NICE diagnostic criteria for ME/CFS
And I don't think this NICE criteria has any significant standing outside the UK
As I'm sure you are aware, the MEA has consistently been very critical of the 2007 NICE guideline and we do not regard it as being fit for purpose
And we do not believe that the NICE diagnostic criteria is a satisfactory way of diagnosing ME/CFS
HOWEVER, and this is where the misunderstanding occurs, the purpose of the NICE diagnostic criteria is to provide GUIDANCE to doctors as to when they should CONSIDER making a diagnosis of ME/CFS
And from that point of view it does have some merit
It is also worth noting that in addition to the patient having new onset and persisting fatigue that cannot be explained by another condition, and results in a substantial reduction in activity, the fatigue in the NICE criteria also has to be accompanied by:
POST EXERTIONAL MALAISE AND/OR FATIGUE (typically delayed, for example by at least 24 hours, with slow recovery over several days)
So, for the non expert doc, this is actually a fairly useful starting point when CONSIDERATION needs to be given to making a diagnosis of ME/CFS
But the NICE definition of fatigue + post exertional malaise + one other symptom from their list (eg cognitive dysfunction, pain) should not be used to make a diagnosis of ME/CFS
I also think that here in the UK, many docs are like myself when it comes to making a diagnosis of ME or CFS, and take a fairly pragmatic approach - rather than sticking dogmatically to one of the 20+ diagnostic criteria for ME, CFS, ME/CFS and SEID etc…..