I'd just been linked to this paper from the 'Down With All That' blog:
http://downwithallthat.wordpress.co...king-the-docs-overstepping-the-mark/#comments
I don't know much about the areas addressed there, but wanted to make some of my own points.
Medically unexplained symptoms: exacerbating factors
in the doctor–patient encounter
L A Page MRCPsych S Wessely MD FRCPsych1 2003
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC539474/
It's a pretty good paper for illustrating a lot of the things I find annoying about how Wessely writes: playing with words, coming up with less well understood ways of saying the same thing, constructing narratives with selected lists of 'possible' explanations, or 'proposed' interventions that only ever reflect his own assumptions.
The first sentence is worth mentioning, because I often see CFS patients being criticised for talking as if managing medically unexplained symptoms' is just used as a to mean 'treating somatization':
This paper proposes that well-intentioned actions by
medical practitioners can exacerbate or maintain medically
unexplained symptoms (MUS)—i.e. physical symptoms
that are disproportionate to identifiable physical disease.
The term is now used in preference to ‘somatization’.1
I also like Wessely's characterisation of the criteria for Somatization disorder, which is different to those I have seen:
Patients with the highest number of MUS are likely to fulfil
the psychiatric criteria for somatization disorder—at least 2
years of multiple and various MUS, with persistent refusal
to accept advice and reassurance from doctors; functioning
impaired.
Those stubborn patients.
The medical
specialties employ shorthand descriptions for particular
clusters of MUS including irritable bowel syndrome, noncardiac
chest pain, fibromyalgia, chronic fatigue syndrome
and repetitive strain injury.
So if we can dig back through those definitions, CFS => MUS => Somatization => refusal to accept advice and reassurance from doctors.
Now that I'm aware of the evidence and studies addressing the impact of CFS on people's lives, how ineffective the treatments available are, and the low rate of recovery, my willingness to accept reassurance from my doctors and make life decisions based upon those reassurances seems rather foolish.
Wessely et al. seem to have a bit too much confidence in the extent to which their research has allowed any real understanding of the causes of MUS. I don't think that had any more knowledge of predisposing and precipitating as perpetuating.
Although research has gone some way to explain the
predisposing and precipitating causes of MUS, there is little
information on the factors that maintain such symptoms and
resulting behaviour.
Factors predisposing to MUS are female gender,6
childhood experience of parental ill-health (particularly
paternal),7 childhood abdominal pain8 and lack of care in
childhood.9 High rates of ‘life events’ occur in the period
predating the onset of MUS in a pattern similar to that seen
before the onset of depressive illness.10 In those with
somatization disorder there are high rates of personality
disorder.11
5 years earlier he'd published a paper looking at childhood abdominal pain's association with adult MUS:
http://www.bmj.com/content/316/7139/1196
They found:
Childhood pain was only very weakly associated with abdominal pain and headache at 36 years but was associated with increasing numbers of physical symptoms at this age. Because there is a strong association between psychiatric disorder and physical symptoms, psychiatric disorder was added to the model, and this led to the association between persistent abdominal pain and physical symptoms in adulthood failing to reach significance.
So often with these studies, they find that bad things correlate with other bad things. This is unsurprising, and uninteresting, particularly with subjectively defined illnesses. My expectation is that difficulties and hardship in childhood are likely to be associated, to some degree, with difficulties and hardships in adulthood - be it for genetic, developmental, social or any other reason. There are going to be so many potential confounding factors that only very thorough research would be able to provide really meaningful and reliable results, and I've never seen Wessely be involved with anything that reaches this standard - it would be difficult to achieve. That many of the associations founds are so uncertain might have been worth mentioning. With CFS we've seen a number of studies reporting increased rates of personality disorder compared to healthy controls, and a number of studies showing no increasing in PD compared to MS patients, and a recent one showing no increase compared to healthy controls when PDs are not diagnosed in ways known to give a high rate of false positives (an obvious flaw with the earlier studies, which any who gave a shit about patients would have complained about).
Just reading the two Wessely studies on childhood stomach pain, one found
There was a modest association between traits such as day dreaming in class and having low levels of energy and persistent abdominal pain.
The other found:
It is difficult to show a consistent relationship with the teachers' ratings of behaviour in the children. There were no associations between low energy, day-dreaming or disobedience, and unexplained hospital admissions.
There's an endless stream of these sorts of minor associations which turn up in some studies and not others. Generally, their only value seem to be justifying vague prejudices against those with MUS. This sort of casual approach towards lumping patients together and making claims about them should be understood as equally morally dangerous as when this approach is taken to different races.
Again, this stuff is just creating a narrative, rather than presenting evidence:
What are the factors that lead to persistence of MUS in
some individuals? Examples of possible precipitating events
include chest pain induced by hyperventilation12 and muscle
ache after unaccustomed exercise.13 Some of these
mechanisms may become chronic. Additional psychosocial
factors may be ‘secondary gain’10 (for example, when
chronic pain spares a parent the burden of caring for a
difficult child) or maladaptive psychological coping
strategies.14 In this paper, we focus on the adverse effects
of medical interventions at various stages of the doctor–
patient encounter.
Then there's this:
An earlier cross-sectional study by the same group had
aimed to identify possible iatrogenic factors in the
persistence of pain.20 47% of the chronic-pain patients
had received more than five types of treatment for their
pain (regarded as overtreatment) and 39% had been given at
least one inappropriate explanation. Qualitative evidence
shows that patients with MUS can experience medical
assessment as hostile and adversarial.21
The implication
is that a poor doctor–patient interaction in IBS and kindred
illnesses may lead to repeat consulting.
Really? Inappropriate, false or misleading medical explanations might lead to more consulting? Not trusting one's doctor could lead to an attempt to get different opinions? Is Wessely going to suggest tighter regulation, and more serious disciplinary action for those medical staff who make false or misleading claims to patients? It's not likely, is it. More likely that further research will need to be funded to better understand how to manage and manipulate patients in to believing that they can trust their doctors: the deconditioning and fear-anxiety models now seem to be so debunked that these dishonest narratives have passed their sell-by date, but I'm sure that new ones can be found.
When asked
about past advice from doctors, the group with medically
unexplained symptoms were significantly more likely to
recall being told their pain was all in the mind.
Occasionally the GP or specialist will decide to refer the
patient to a psychiatrist. This is neither simple nor
straightforward. As one expert notes, ‘It is a commonplace
clinical observation that somatising patients—more than
any other group—resent psychiatric referral or at least are
very sceptical of its purpose’.16
When the psychological work around MUS is so often used as an excuse to mistreat patients, it's not that surprising that patients might become less enthusiastic about seeing a psychiatrist. There is also a sense that some doctors turn to psychological explanations as a default when they cannot medically explain symptoms, and this is is no a well respected approach.
Reassurance
Reassurance is particularly important with patients who are
hypochondriacal or have MUS. Some qualitative work has
looked at the experience of patients with MUS.34 Patients’
accounts of their doctor’s explanations were categorized
into three types—rejecting, colluding and empowering.
The authors suggest that empowering explanations—i.e.
explanations that make patients feel they have some
influence over their symptoms—are most beneficial
individually and to the health service.
So in a qualitative analysis, the authors lumped explanations in to the categories 'rejecting', 'colluding' and 'empowering', that they decided 'empowering' are the most beneficial. This astounding result has clear implications for how patients deserve to be spoken to.
I wonder which would be best out of 'Good', 'Bad', and 'Ugly'?
Also, they don't account for the possibility that there could be some correlation between a patient having problems which allowed them greater influence over their symptoms, and coming to explanations of their illness which make them feel that they have influence over their symptoms.
The whole paper is available here, and it's pretty typical rubbish. The 'collusion' section stood out to me as being especially bad.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC27727/
The positive empowering explanations do seem quite dodgy and manipulative to me.
The adoption of a label such as IBS, fibromyalgia, CFS or
repetitive strain injury affords the sufferer legitimacy,
avoids the stigma of a psychiatric illness and ensures that
dysfunction is not seen by others as imaginary—in other
words, it allows entry into the ‘sick role’.37
Ho ho ho ho. That's right Simon, that what the adoption of the 'Chronic Fatigue Syndrome' label does. You really are a world class expert on these matters.
In two studies, membership of a patient
organization was associated with poor prognosis.52,53 Even 225
if this does not prove cause and effect (since membership of
a self-help group is not randomly allocated) the finding can
still raise the possibility that aspects of group culture are
maladaptive—perhaps promoting emotional support and
legitimacy at the expense of continued disability.
This point prompted this letter:
The comment by Dr Page and Professor Wessely (May 2003 JRSM
1) that 'the views propagated by [support groups] can encourage inappropriate illness behaviour' needs challenging. Certainly, membership of patient organizations may well be associated with a poor prognosis, since it is commonly when the outlook is poor that one needs the support of a group. Other reasons may include the lack of social and family support. But in my experience of cancer support organizations for the past 16 years, the aim is normally rehabilitation, not 'continued disability'. Unfortunately, some conditions, such as radiotherapy damage, are progressive and untreatable, and only other people in the same boat can understand. Another problem that perpetuates the 'sick role' for cancer survivors is the insistence by oncologists on regular check-ups even after the five-year mark is reached.
The reason many people continue to be members of support groups after they themselves have been successfully treated is that they wish to give voluntary help to others in their turn, after appropriate training. This is hardly maladaptive behaviour.
There were a few other letters sent too, here are a couple I picked out:
Unfortunately the important paper by Dr Page and Professor Wessely (May 2003 JRSM
1) has served to widen the gulf between UK and USA physicians. Just as we have struggled to acquaint our non-psychiatric colleagues on the spectrum of conversion, hypochondriasis, somatization and factitious disorders as described in the DSM IV we are now presented with a new acronym MUS [medically unexplained symptoms]. US psychiatrists and medical colleagues would not know a MUS from a mouse so I would respectfully urge we stick to the terminology we all understand.
A new name may convey new understanding or mask questions that are unresolved. I am not sure where medically unexplained symptoms (MUS), proposed by Dr Page and Professor Wessely (May 2003 JRSM
1), fits into those roles.
MUS surely depends upon who is providing the explanation? If I were to go with my somewhat foggy gastroenterological knowledge, based on my Membership examination, and do a busy GI clinic I imagine that I would reach fewer diagnoses than a general physician with an interest in gastroenterology. In turn the generalist might do less well than a specialist gastroenterologist, who might do less well than an upper GI superspecialist, and so on, if one looked at the subset of patients proven to have upper GI problems as the outcome.
As a neurologist interested in headache I see patients labelled with various terms, usually as functional, who have a clearly definable headache syndrome. It is rare in my experience to encounter undiagnosable headache, yet this is often a symptom quoted in such research.
2 The unexplained portion seems to have been inadequately explored in the sense that those providing the data were not sufficiently expert to explain it. This brings a question of what is sufficient. We do not accept blood pressure information from faulty devices, so how can such research accept potentially flawed diagnoses?
To assure doctors that 30% of patients are medically unexplained is not very helpful as it implies that there is no diagnosis. To say that a patient has an unexplained problem would require that it has been adequately investigated, or at least a complete history taken by someone sufficiently trained to do so. Research in this area surely requires some standard of measurement of the accuracy of the explanation, or lack of it. Perhaps funds directed to MUS might be directed to better training of doctors in some common clinical problems that are misdiagnosed rather than unexplained.
It's now really late.... but I wanted to get this done before crashing. I'm planning to read through and edit tomorrow.
I also stumbled upon this chapter by Wessely that I want to read, but wasn't able to today:
http://books.google.co.uk/books?id=UHTOcIL_m54C&pg=PA323&lpg=PA323&dq="Aching muscles after exercise." lancet 1987&source=bl&ots=WgUeM-mPPd&sig=pKN-nUN4KyqfCl2jOsE3ImVJDJc&hl=en&sa=X&ei=1d2NUJvOFoHZ0QWb7YCYAw&redir_esc=y#v=onepage&q="Aching muscles after exercise." lancet 1987&f=false