Interesting development here. It might be interesting to know the real reason. Prof Crawley informs paediatricians that 'severe illness is not on the ME spectrum' and it is re-diagnosed as PRS/PAWS. PEM has even been included in the diagnostic guidelines for PRS. It is very tempting to wonder if this new definition of PRS is perhaps providing very useful in protecting doctors who have made their patients much more ill through enforced exercise therapy.