Hi Tania
I went back and reconsidered the article, but I have to say at the outset, that I still found his use of terminology confusing and not very helpful to me personally. But that might just be me.
Tania:
Interestingly ISO I took that article in a very different way to what you did.
Originally Posted by insearchof
Hi Tania
Having read the article Tania, although there are similarities between what the author personally calls IVN, there are marked differences, which suggest (despite his claims) that IVN is not ME and would more aptly be described as PVFS with evidence of CNS dysfunction as classified at G93.3
So I had trouble finding anything on IVN and or epidemics associated with it.
Originally Posted by insearchof
The author also claims that ME, CFS and the illness that he refers to as IVN are all the same. As I have tried to point out, I do not believe this is correct.
Tania:
Thou he called it IVN along with calling it ME, he did say it wasnt like IVN due to their being many more symptoms... so I myself didnt precieve him as calling what would be classical kind of IVN, ME, as he was saying it was something a bit different.
I personally believe he was saying IVN was the same as ME (which is why I was troubled and made my initial post) because he makes the following remarks.
He clearly distinguishes INV from EP but not ME, on the basis of IVN having many more symptoms than EP but not ME.
In the next sentence then goes on to state that it is indeed similar to ME but notes that few vascular features are mentioned in ME
So at this point he is saying it is similar to ME but not the same because of the fact that very few vascular features were mentioned in the ME literature . I agree with him here.
He then goes on and states that what he calls IVN, is a ''variant of the Chronic Fatigue Syndrome'' that he specifically states was called ME before 1988
So he clearly states here that what he terms IVN is the same as ME, albeit a variant of it.
He then goes on to discuss the Pellew and Miles study of an ME epidemic in Adelaide in the 1950s describing vascular system damage and Gilliam on the County General Hospital LA epidemic in 1934 to make the same point, but states that vascular invovlement in ME is not as striking as in IVN
So at this point it appears as though he might not be equating INV with ME which was consistent with his opening observation but he then states the following which makes it quite clear that he believes they are the same by referencing his NZ trip where he states that it was then that he found that what he called IVN "was the same as ME''
He states that he believes they are the same disease here:
*
I believe it is the same disease. Although no vascular features are mentioned in CFS, there are allusions to vascular involvement in ME.........
Here he uses both the terms CFS and ME in the above paragraph in one single sentence.
This is extraordinarily confusing. However, what he appears to be saying is that although there are no vascular features mentioned in the CFS criteria, there are indicators of vascular involvement in the historic ME literature. That would be correct.
However he then makes a distinction between IVN and CFS stating that vascular involvement is more striking in IVN.
So having said that IVN is the same as ME, he then turns around and distinguishes IVN from CFS, claiming that vascular issues are more striking in IVN. Even so, he still regards IVN as a subset of CFS (ME).
So from my reading, he seems to be suggesting that INV is the same as ME (which he calls CFS) .
On the one hand, he makes reference to the historic ME literature and yet, on the other - he seems to approach it as though ME and CFS were one and the same illness.
So I agree with your general observation, that he appears to be seeing ME as a subset of CFS and possibly INV as a variant of ME within that context.
But to suggest that IVN is a variant of ME and is a sub set of CFS - is incorrect in my view, for the reasons previously posted (especially the divergent infectious onset periods)
Tania:
So I think we can say that symptom of vascular issue is in ME (if not it means we have to discount history studies which are and were classified as ME and start calling them post viral syndrome or something).
I think I said I could not
recall reading of bruising and painful veins and the other symptoms he described, as being traditionally associated as features of ME.
I understand that vascular issues are part of ME, in fact that is primarily what is occurring in the brain due to enteroviral activity and inflammation. Hence the hypoperfusion and small bleeds from small vessels.
What I was in effect trying to say was that the specific symptoms he referred to (bruising and painful veins) I did not view as being commonly reported in epidemics or generally so and therefore, might provide a point of distinction between the condition he calls IVN and ME. He states himself that vascular conditions in IVN is more striking than in ME and that there is scant historical ME literature on this point.
I do find it remarkable though, that he believes that such painful symptoms can occur at onset of what he describes as IVN, without being noticed especially as he describes it in the following terms : bruises that 'sting' and 'burn', 'swallen veins'' that were ''painful in nature' and veins rupturing that cause ''stinging sensations'' and leave a deep bruise.
Tania:
So maybe pain in legs which he thinks is coming from inflammed deep veins? Who knows but if one is interputing it like this.. it still sounds like common ME symptom most of us have and not something sounding unusual after all..
Yes this could be quite possible. It is interesting what you raise here in the context of his discussion of IVN. Muscle pain and fatigue is often commonly discussed, but not throbbing vascular pain. Could it be that patients simple use the term muscle pain to describe this? It is very curious and I despite his claims (and my failure to note such in the historic ME literature), I might take a closer look.
Those severely sick (Im talking about bedbound patients) and I think we can agree that there are some very ill ME patients as some do die.. light coma states arent uncommon. So thou I havent found reference to it in the historical texts Ive read so far (im no expert on historical ME texts), Im sure this state of exhaustion so bad there is a heavy extreme sleep or like a light coma like state going on at times is a ME symptom
I agree, that the severely ill do die and have been known to slip into a coma. I do not know though, whether that is reported in the literature in the severely ill ME cases.
As for extreme drowsiness, I do remember Hyde talking about one ME patient that literally could not keep awake. However, unless mistaken, I had the impression that this was an exceptional case.
I do think that with ME having so many different symptoms that it may be hard to find everyone in the historical texts and all the experts often focus on different aspects (just like our experts nowdays tend to do). Everyone has written about it from their perspective rather then a consensus point. I personally think we can possibly get a even better view on it by studing various cases of it, throu all different ones who studied the outbreaks of it.
There have been 64 noted symptoms of ME. This does not make it easy for discussion purposes, though primarily in this thread we have been looking at common features so far, that distinguish the illness from CFS or PVFS instead of individual symptoms.
There will of course be those that crop up that whilst not as common, are still reported in the literature and will be found on that list. When assessing whether an illness like IVN can be distinguished from ME, I look at what are regarded by physicians as key features or commonly recognized features for the purposes of classifying illnesses. This approach is somewhat different from simply recognizing whether symptoms exist in each illness.
It seemed to me, from reading that article that the author was promoting the vascular element of IVN as a key feature or component of the illness and used it, on one occasion in that article to distinguish it from CFS.
So I reasoned, if he was promoting it as a key defining feature, then when assessing it against ME, although present, it is not regarded as a key defining feature for the purposes of classification and identifying the disease. So this again, suggested to me that IVN and ME cannot and could not be regarded as the same illness, even though the author asserts otherwise.
ISO:
So even though he makes the argument that IVN, CFS and ME are the same, the vascular features which appear to be one of the distinctive features of IVN (particularly the vascular pain and bruising I would have thought) are not mentioned in CFS and are simiply alluded to, in ME.
So this is very contradictory, confusing and directly at odds with his main premise, that IVN, CFS and ME are all one and the same.
Tania:
Keep in mind that he's viewing ME as a subgroup of CFS (that's my interputation), then it makes sense
I think his interchanging use of terms is confusing. My interpretation of that sentence is that he is saying that vascular features are not mentioned in the 1988 CDC CFS definition but are alluded to (sparingly as he point out) in historic ME literature.
With respect to your interpretation of his view point (ME as a subgroup of CFS) although I am uncomfortable with that the term, I understand what you mean, and I have to agree, from my subsequent reading, that this might be correct.
ISO: For a start, the author refers to ME epidemics as CFS.
Tania:
I dont completely disagree with him as it is "generally" recognized by many that ME is nowdays commonly known as a subgroup of CFS and that ME is often called CFS. (yeah I do know it is incorrect but its just how things currently at this point of time.. with like CDC not "fully" recognising ME and going as far as putting up ME definitions etc. It isnt completely incorrect to say that ME is a subgroup of CFS till those like the CDC go and make things clearer. One can say the CDC recognises ME like you said.. but on the other hand it also kind of dont at the same time (if it did, it wouldnt do as it does and try to hide ME).
I too will sometimes say CFS when refering to ME.. I think a lot of us do even those who know the that they can be very different things. I think most will recognise CFS epidemics as being probably ME.
My personal view is, that those who regard ME as a subset of CFS, do not understand what ME is (as discussed in the historic literature) and or, that the two are distinct and separate illnesses or alternatively, do not wish to make the distinction.
As we are talking about two distinctive illnesses, it is no more appropriate to medically classify ME as a subset of CFS, as it would be to classify MS there. CFS is a diagnosis of exclusion. Therefore ME must be considered first. The outcome of that consideration will be that you either have ME or you do not. If you have ME, then that would be your diagnosis and there would be no need to consider CFS, let alone consider CFS and determine ME was a sub group of it.
CFS is a diagnosis of exclusion. Consequently, were you subsequently to learn you had ME, but had been given a diagnosis of CFS (syndrome of unknown cause), then you would no longer be regarded as suffering from a syndrome, called CFS.
It is impossible and illogical to contend that ME is a subset of CFS.
I think you might find Tania, that the CDC makes a statement on their web site, which unequivocally states that ME is a completely separate illness with its own distinct medical definition. So I do not think you can contend that the CDC do not fully recognize ME. What they do not and will not recognize (and rightly so) is that CFS as defined by the CDC and CCC is not ME.
If you go back a few pages, rlc made a post which indicates that the CDC have known this from the inception of the 1988 definition of CFS.
What they have not done, which might be something for ME advocates to push for is that they have not provided material on their website in relation to ME.
It isnt completely incorrect to say that ME is a subgroup of CFS till those like the CDC go and make things clearer
I understand where you are coming from here, but from my pov and one of the objectives of this thread, is to make things clearer, and to encourage people to learn about/understand and apply the correct terminology, because until we do what makes you think the CDC is going to me motivated to make a change?
And who will be motivated to investigate those who may have ME but have been left with a CFS diagnosis?
*citations from Infectious Venulitis Chronic Fatigue Syndrome Myalgic Encephalomyelitis -Erich Rhyll MD from the Committee for Justice and Recognition of Myalgic Encephalomyelitis here:http://c4jrme.110mb.com/supplement223.htm