@Stuart, I think there is a problem with the concept of 'cervical medullary syndrome' as used by the neurosurgeon Peterson.
I don't think most neurologists would recognise his 'syndrome' as a good guide to the clinical picture of CCI. Maybe the term is more widely used, but if it is I don't know whether it is described the way he does.
The problem is that his list is unhelpful.
If neck pain or headache are present they are not part of a 'medullary' problem. They are due to whatever bony or joint problem is associated with the CCI. Moreover, since a high proportion of people have neck problems and headaches these symptoms are too non-specific to be helpful.
Several of the other symptoms are much too vague to be useful - visual and hearing problems for instance - lots of people have those.
To put it crudely, a broken arm and a broken leg both cause pain but nobody confuses a broken arm with a broken leg, or with ME or fibromyalgia for that matter.
The clinical presentations of CCI and ME are completely unrelated, as Michiel indicates. If you attend to basic detail for each symptom in a real case you will find it either points one way or another, not both.
I agree with Michiel that Jeff would do well to add disclaimers to his comments. There is no similarity and there is no evidence for CCI being related to ME. To suggest otherwise is to put vulnerable people, particularly children, in grave danger.