I think this is quite muddled and unhelpful. Some of the problems come from the guideline itself and others seem to be new problematic interpretations of it.
In the summary, there is mention of
- typically a clear relationship between normal everyday activity levels causing a disproportionate escalation in fatigue, which does not improve with rest and is slow to recover.
- A flare-up describes a worsening of symptoms, more than would be accounted for by normal day-to-day variation, that affects the person's ability to perform usual activities. It is typically transient and resolves after a few days.
- A relapse describes a sustained and marked exacerbation of symptoms lasting longer than a flare-up
- Debilitating fatigue that is worsened by activity, is not caused by excessive cognitive, physical, emotional, or social exertion, and is not significantly relieved by rest.
All before there is any mention of PEM. When PEM is mentioned, all that is said is
- Post-exertional malaise after activity.
I think anyone who isn't already familiar with ME/CFS is going to be mightily confused. That first bullet point seems to suggest that the result of activity is an escalation only in fatigue. Is PEM that escalation in fatigue after activity, or a flare-up that happens after activity, or something completely different?
I don't think the pathophysiology is fully understood, let alone the exact pathophysiology. This makes it sound as though BACME have it right with their dysregulation, the BPS crowd have it right with their central sensitisation and deconditioning, that they are in the right ballpark, and there just needs to be a bit of finessing.
I don't know why CBT needed to make the summary. If the doctor is managing associated conditions such as mental health, then they and the patient can decide if CBT or some other sort of counselling is useful.
This CKS has the fingerprints of BPS minimisers on it (as, unfortunately, the guideline did to a slightly lesser degree). It's ridiculous that 'physical activity or exercise programme' makes it to the summary, while there is no mention of managing activity to avoid PEM, or pacing.
I think I'd give this CKS a fail grade, based on the summary. I'm disappointed that Charles has appeared to endorse it.