EULAR evidence based recommendations for the
management of fibromyalgia syndrome
S F Carville, S Arendt-Nielsen, H Bliddal, F Blotman, J C Branco, D Buskilla, J AP DaSilva, B Danneskiold-Samsøe, F Dincer, C Henriksson, K Henriksson, K Kosek, K Longley, G M McCarthy, S Perrot, M J Puszczewicz, P Sarzi-Puttini, A Silman, MSpäth and E H Choy
Ann Rheum Dis
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ARD Online First, published on July 20, 2007 as 10.1136/ard.2007.071522
EULAR evidence based recommendations for the
management of fibromyalgia syndrome
S. F. Carville1, L. Arendt-Nielsen2, H. Bliddal3, F. Blotman4, J. C. Branco5, D. Buskila6, J. A. P. Da Silva7, B. Danneskiold-Samsøe3, F. Dincer8, C. Henriksson9, K. G. Henriksson10, E. Kosek11, K. Longley12, G. M. McCarthy13, S. Perrot14, M. Puszczewicz15, P. Sarzi-Puttini16, A. Silman17, M. Späth18, E. H. Choy1 Corresponding address: Dr Serena Carville, 1Sir Alfred Baring Garrod Clinical Trials Unit, Academic Rheumatology Unit, King's College London, Weston Education Centre, Cutcombe Road, London, SE5 9RJ, United Kingdom., email: firstname.lastname@example.org
2 Aalborg University, Center for Sensory-Motor Interaction, Department of Health Sciences and Technology, Denmark. 3The Parker Institute, Frederiksberg Hospital, Copenhagen, Denmark. 4Rheumatology Department, Hospital Lapyeronie, Montpellier, France. 5Serviço de Reumatologia, Hospital Egas Moniz, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal. 6Department of Medicine, Soroka Medical Center, Beer Sheva, Israel. 7Reumatologia, Hopitais Da Universidade, Coimbra, Portugal. 8Department of Physical and Rehabilitation Medicine, Hacettepe Medical School, Ankara, Turkey. 9INR, Section of Occupational Therapy, Faculty of health sciences, Linköping University, S-581 85 Linköping, Sweden 10Neuromuscular Unit, University Hospital, Linkoping. 11Department of Clinical Neuroscience, Karolinska Institute, Stockholm, and Stockholm Spine Center, Löwenströmska Hospital, Upplans Väsby, Sweden. 12Bath, United Kingdom. 13Rheumatology, Mater Misericordiae University Hospital, Dublin, Ireland. 14Pain Clinic, Hospital Cochin, Paris, France. 15Department of Rheumatology, Rehabilitation and Internal Medicine University of Medical Sciences, Poznan, Poland 16Rheumatology Unit, L. Sacco University Hospital, Milan, Italy, 17Faculty of Medical and Human Sciences ARC Epidemiology Unit, The University of Manchester, Manchester, United Kingdom, 18Bahnhofstr. 95 82166 Graefelfing, Germany The Corresponding Author has the right to grant on behalf of all authors and does grant on behalf of all authors, an exclusive licence (or non exclusive for government employees) on a worldwide basis to the BMJ Publishing Group Ltd to permit this article (if accepted) to be published in ARD and any other BMJPGL products and sublicences such use and exploit all subsidiary rights, as set out in our licence (http://ARD.bmjjournals.com/ifora/licence.pdf)." Keywords: EULAR, fibromyalgia, management, systematic review Word count: 3012
Copyright Article author (or their employer) 2007. Produced by BMJ Publishing Group Ltd (& EULAR) under licence.
To develop evidence based recommendations for the management of
fibromyalgia syndrome (FMS). Methods:
A multidisciplinary task force was formed representing eleven European
Countries. The design of the study including search strategy, participants,
interventions, outcome measures, data collection and analytical method was defined at
the outset. A systematic review was undertaken with the keywords ‘fibromyalgia’,
‘treatment or management’ and ‘trial’. Studies were excluded if they did not utilise
the ACR classification criteria, were not clinical trials, or included patients with
chronic fatigue syndrome or myalgic encephalomyelitis. Primary outcome measures
were change in pain assessed by visual analogue scale (VAS) and fibromyalgia
impact questionnaire (FIQ). The quality of the studies was categorised based on
randomisation, blinding and allocation concealment. Only the highest quality studies
were used to base recommendations on. When there was insufficient evidence from
the literature, a Delphi process was used to provide basis for recommendation. Results:
One hundred and forty six studies were eligible for the review. Thirty nine
pharmacologic intervention studies and 59 non-pharmacologic were included in the
final recommendation summary tables once those of a lower quality or with
insufficient data were separated. The categories of treatment identified were
antidepressants, analgesics, and ‘other pharmacological’ and exercise, cognitive
behavioural therapy, education, dietary interventions and ‘other non-
pharmacological’. In many studies sample size was small and the quality of the study
was insufficient for strong recommendations to be made. Conclusion:
Nine recommendations for the management of FMS were developed
using a systematic review and expert consensus.
Fibromyalgia syndrome (FMS) is a common rheumatologic condition characterised
by chronic widespread pain and reduced pain threshold, with hyperalgesia and
allodynia. Associated features include fatigue, depression, anxiety, sleep disturbance,
headache, migraine, variable bowel habits, diffuse abdominal pain and urinary
frequency . Although the precise pathogenesis remains unknown, peripheral
and central hyperexcitability at spinal or brainstem level , altered pain
perception  and somatisation  have been hypothesised and demonstrated in
The American College of Rheumatology (ACR) classification criteria for FMS  are
the most commonly used in clinical and therapeutic research. The healthcare
utilisation by patients with FMS is high averaging over $2000 per patient per year
, but it has been shown that positive diagnosis and management can reduce
healthcare utilisation .
Although effective treatments are available  no guidelines exist for
management of FMS. The objectives were to ascertain the strength of the research
evidence on effectiveness of treatment of FMS and develop recommendations for its
management based on the best available evidence and expert opinion to inform
A multidisciplinary taskforce was formed consisting of 19 experts in FMS representing eleven European Countries.
A systematic search of Medline, PubMed, EmBASE, PsycINFO, CINAHL, Web of
Sciences, Science Citation Indices, Cochrane Central Register of Controlled Trials
and Cochrane Database of Systematic Reviews using the key words: “fibromyalgia”,
“treatment or management” and “trial” for all publications till the end of December
2005 was carried out. A manual search of the bibliographies of trials was undertaken
to verify that all published trials were identified. Inclusion criteria
Included studies had to be clinical trials using the American College of Rheumatology
1990 classification criteria for FMS  to select patients. Studies including patients
with Chronic Fatigue Syndrome or Myalgic Encephalomyelitis, were excluded unless
they were divided into separate comparator groups for analysis.
Assessment of literature
A ‘checklist’ method  was used to assess quality of each study. Data was tabulated using a customised data-extraction form. This included number of patients in each arm, randomisation and blinding status. Previous reviews have identified two main outcome measures: pain assessed by visual analogue scale (VAS) and function
assessed by the Fibromyalgia Impact Questionnaire (FIQ) . The main measure of effect was the between group difference calculated from the mean change between the pre- and post- treatment values in these outcome measures. Where possible, effect size for the ‘best’ treatments in each category was calculated (averaged if there was more than one trial). Rosnow and Rosenthal’s modified version of the Cohen’s d calculation was used . The thresholds used for interpretation were: values >0.2 = small, >0.5 = medium and >0.8 = large. The number needed to harm (NNH) was also calculated if possible, using withdrawal due to adverse event as the event. Additional information included; recruitment population; duration of disease, treatment and assessment; number of tender points; and myalgic score. Other outcome measures considered were also tabulated. If required data were recorded, but not presented, or not presented in a suitable format, the author was contacted wherever possible. If data was only provided in graphical format, this was extracted where possible. Data extraction was verified by a second committee member to ensure accuracy. Any discrepancies were re-evaluated. Categorising evidence
Due to the large variability in outcome measures and assessments data could not be pooled to perform a formal meta-analysis. Therefore studies were classified according to their randomisation and blinding level. The highest quality study (randomized controlled trial) for each treatment class was used as a basis for the recommendations. The ranking was graded as (with 1 being highest):
Randomised controlled double-blind trials
Randomised open trials / Non-randomised single blind
Evidence for each recommendation was categorised according to study design and strength of each recommendation was classified according to the criteria previously published . The recommendations were discussed at a final committee meeting and via email for a consensus to be reached. Delphi exercise was used to base recommendations on when limited evidence was found by systematic review. Agreement on the included recommendations was unanimous.
Publication Bias Analysis
Abstracts published between 2002 and 2005 inclusive in Annals of Rheumatic Disease, Pain, Arthritis & Rheumatism and Journal of Musculoskeletal Pain were reviewed to guard against non-inclusion of any negative studies that had not been fully published. If available, data was extracted. Any contradictory data would be included when forming the recommendations.
Future research plan
The committee proposed that these recommendations should be reviewed and updated in 4 years time, to see if a) quality of trials and reporting in FMS had improved and b)
if there was new evidence to suggest recommendation of new treatments, or to alter the recommendations of treatments already included.
Research evidence identified
In the preliminary search, 508 studies were identified. Table 1 demonstrates how these were shortlisted.
Eligible clinical trials
Non-English language – translations not
Table 1. Study breakdown from initial literature search. The 146 eligible clinical trials included 59 pharmacological and 87 non-pharmacological (including multidisciplinary). Studies were further subdivided into treatment interventions and the highest quality studies from each intervention were selected to be the basis for recommendations, (table 2).
Education / CBT
Table 2. Breakdown of the short listed studies to base recommendations on, and those eliminated from further analysis.
Effect size and NNH for the interventions recommended were calculated where possible (table 3).
Effect size (95% confidence interval)
Table 3. Effect size calculated using modified Cohen’s d method for recommended treatments where data available.
From these tables the following recommendations were made (table 4).
Full understanding of fibromyalgia requires comprehensive assessment of pain, function, and psychosocial context. Fibromyalgia should be recognised
as a complex and heterogeneous condition where there is abnormal pain processing and other secondary features. Optimal treatment requires a multidisciplinary approach with a combination of non-pharmacological and pharmacological treatment modalities tailored according to
pain intensity, function, associated features such as
depression, fatigue and sleep disturbance in discussion
with the patient. Non-Pharmacological Management
Heated pool treatment with or without exercise is effective
in fibromyalgia. Individually tailored exercise programmes including aerobic exercise and strength training can be beneficial to
some patients with fibromyalgia. Cognitive behavioural therapy may be of benefit to some
patients with fibromyalgia. Other therapies such as relaxation, rehabilitation, physiotherapy and psychological support may be used
depending on the needs of the individual patient. Pharmacological Management
Tramadol is recommended for the management of pain in
Simple analgesics such as paracetamol and other weak
opioids can also be considered in the treatment of
fibromyalgia. Corticosteroids and strong opioids are not
recommended. Antidepressants: amitriptyline, fluoxetine, duloxetine, milnacipran, moclobemide and pirlindole, reduce pain and
often improve function, therefore they are recommended for the treatment of fibromyalgia. Tropisetron, pramipexole and pregabalin reduce pain and
are recommended for the treatment of fibromyalgia.
Table 4. EULAR Recommendations for the management of fibromyalgia.
Assessment of Recommendations
There was no weighting in terms of order of the recommendations. √
recommendation derived from expert opinion.
√ Full understanding of fibromyalgia requires comprehensive assessment of pain,
function, and psychosocial context. Fibromyalgia should be recognised as a
complex and heterogeneous condition where there is abnormal pain processing and
other secondary features.
This is based on expert opinion. It is important to recognise that FMS is a
heterogenous condition comprising a range of symptoms and features, effective
management must take all of these factors into account. The nociceptive system also
has connections with the stress regulating, immune, and the sleep system in the limbic
brain. It is these links that probably lead to the ‘syndrome’ incorporating numerous
symptoms and features.
√ Optimal treatment requires a multidisciplinary approach with a combination of
non-pharmacological and pharmacological treatment modalities tailored according
to pain intensity, function, associated features such as depression, fatigue and sleep
disturbance in discussion with the patient.
This is a logical progression from the first recommendation. It represents general
practice, but is based solely on expert opinion. As FMS is polysymptomatic, lacking
one treatment that acts on all symptoms, a multidisciplinary approach tailored to the
needs of the individual is often required. This may need to include self-management
via patient education  . Only two multidisciplinary trials were short-
listed in the summary tables for further analysis . Other reviews have
supported the use of multidisciplinary treatment , but highlighted the lack of
high quality trials in this area  . Heated pool treatment with or without exercise is effective in fibromyalgia.
Heated pool treatment or balneotherapy was reported to be effective in improving
pain and function. Three of 5 trials included exercise in the intervention  
(two positive for function and two for pain). Of those without exercise, two were
positive for pain and function  . In the third trial only the heated pool
treatment group improved in pain, but no comparison was made to the control.
Function was not assessed . Drop out for adverse events was very low. Sample
sizes ranged from medium to large. Three of the studies restricted the use of
medications, (not stated in the remaining two). The fairly high quality of this small
number of studies with positive results has lead to this recommendation and there is
agreement with previous reviews .
√ Individually tailored exercise programmes including aerobic exercise and
strength training can be beneficial to some patients with fibromyalgia.
This is based largely on expert opinion with a combination of some experimental
evidence and previous reports.
For aerobic exercise the majority of trials were open (7/11). The best quality were a
randomized, assessor blind 12 week study by Richards et al. 2002, with large sample
size , and a smaller randomised single blind study by Valim et al 2003 .
Valim et al. reported an improvement in VAS pain and FIQ compared to control.
Richards et al. did not report significant between group improvements in either of our
chosen outcome measures although the FIQ score did improve more in the treatment
group, and significant between group improvements were seen at 12 months follow-
up. All three strength training studies were randomised but only one single blind.
This had no significant between group differences in pain or function, although both
improved in the exercise group only .
In general the quality of studies among exercise trials was considerably variable.
Blinding and/or control was frequently inadequate. Those that did show some
differences in favour of exercise used usual activity and care for their controls 
 (with the exception of Valim et al. who had a stretching control group ). The
majority of exercise studies asked for participants not to change their medication
intake whilst on the trial (9),
Although evidence in the literature was poor, the committee felt that given the safety
and benefit of exercise to general health exercise should be included as a
recommendation. The poor quality of the trials and our predetermined outcome
measures were likely precluding positive outcomes from being shown. In previous
reviews, exercise has been recommended    with aerobic exercise
gaining the most support. It is likely that different forms of exercise would suit
different subgroups of patients, hence these programmes should be tailored to the
√ Cognitive behavioural therapy may be of benefit to some patients with
This is based on expert opinion. The only two studies identified for our review with
pure cognitive behavioural therapy (CBT) were of poor quality; neither had a control
group, both allowed patients to remain on their usual medication and only one used
either of our predetermined outcome measures.
This is another area in which the poor quality of trials has masked what experts
believe to be a realistic reflection of possible benefits. Whilst previous review work
has also been hampered by the inadequacy of research in this field, strong evidence
has been reported for CBT with positive results for pain & function .
√ Other therapies such as relaxation, rehabilitation, physiotherapy and
psychological support may be used depending on the needs of the individual patient.
This is based on expert opinion and some experimental evidence. Two studies of
moderate quality were identified for physiotherapy. An open study  for
connective tissue massage which had larger subject numbers (25 control and 23
treated) and lasted 10 weeks, reported improvement in both pain and function
compared to control. Other relaxation and rehabilitation techniques are recommended
due to expert opinion. Clinical trial evidence is lacking in these areas although
reviews report some benefits . Tramadol is recommended for the management of pain in fibromyalgia.
Simple analgesics such as paracetamol and other weak opioids can also be
considered in the treatment of fibromyalgia. Corticosteroids and strong opioids are
Regarding tramadol, two randomised controlled trials were identified as eligible for
the review . One was a high quality study of large sample size and 13 weeks
duration . The second was preceded by an open label study and only included
responders . Bennett et al. reported positive effects for pain and function, and
Russell et al. reported improved pain levels but no change in function. There was no
difference between placebo and treated group for adverse event withdrawals (high but
non-serious). Bennett et al. restricted concomitant medications, but Russell et al.
disallowed sedative hypnotics only. Tramadol should be used with some caution due
to the possibility of typical opiate withdrawal symptoms with discontinuation and the
risk of abuse and dependence .
The recommendation for simple analgesics and other weak opioids is based mainly on
expert opinion due to insufficient data .
The negative recommendation for use of strong opioids and corticosteroids is based
on expert opinion. These medications have significant long-term side effects and no
clinical trials were identified in FMS. Previous reviews support our recommendation
Antidepressants: amitriptyline, fluoxetine, duloxetine, milnacipran, moclobemide
and pirlindole, reduce pain and often improve function therefore they should be
considered for the treatment of fibromyalgia.
Four out of 5 trials of amitriptyline that assessed VAS pain had positive outcomes.
Only two used the FIQ, one positive. However, it is important to note, that as
highlighted in previous reviews , the only trial that lasted longer than 12 weeks
did not show a significant improvement in pain compared to control . Two trials
assessing fluoxetine reported positive outcomes for both pain and function  .
These trials were of moderate to high quality, reasonable samples sizes and 6 and 12
weeks duration. Duloxetine improved function in two trials and pain in one  .
The milnacipran trial reported an improvement in pain . These were all large,
high quality trials of 12 weeks duration. Moclobemid and pirlindole were assessed in
one trial each, both of high quality and with improvements in pain  . FIQ was
not assessed in either trial. For all the trials withdrawals due to adverse events were
generally low and non-serious.
In general these trials excluded other medications prescribed for FMS, with the
exception of paracetamol. The only exception was the Arnold et al. 2002 trial which
also allowed NSAIDs . Previous reviews have agreed with the recommendation
of antidepressants with the strongest evidence for amitriptyline (or tricyclic
antidepressants)    .
Tropisetron, pramipexole and pregabalin reduce pain and should be considered for
the treatment of fibromyalgia.
Two tropisetron clinical trials were eligible. One had positive results for pain at a
dose of 5mg . Späth et al. 2004 did not report significantly positive results, but
sample size was small and there was a positive trend in the treated group . FIQ
was only assessed in the trial by Späth et al. 2004 with negative results therefore no
firm comment can be made on this outcome measure. Fäber et al. 2000 made no
comment on whether concomitant medications had been controlled, but Späth et al.
disallowed antidepressants, tranquilizers and sedatives. This treatment appears well
tolerated. These were short term studies, so further research into longer term effects
One trial for pramipexole was positive for both pain and function . Frequency of
mild/moderate adverse events was high and this trial did not restrict concomitant
medications, although dosages were kept stable. A monotherapy trial is required for
more conclusive assessment of effect.
One trial reported pregabalin 450mg reduced pain, but FIQ was not assessed .
Dropouts due to adverse events were largely classed mild to moderate in severity. All
medications for pain and sleep disorders were restricted, with the exception of
These are recent studies and suggest further research into the use of these promising
medications for FMS. Previous reviews have also mentioned their potential benefit
  (neither include the pramipexole study as this was not published).
DISCUSSION These EULAR recommendations are based on expert opinion and changes in pain assessed by VAS and function assessed by the FIQ in clinical trials. Positive effects in other outcome measures were not considered, neither were pain or function if assessed by different instruments. Consequently some studies were excluded from our review due to not using these outcome measures, or not presenting the data. Although other instruments might be more sensitive in FMS it was decided that setting a standard for outcome measures was vital so that comparisons could be made fairly between trials and therefore using those most frequently reported allowed better analysis   Previous reviews have used different inclusion/exclusion criteria and/or assessed more or different outcome measures producing different evidence e.g.  . The high variability in outcome measures used, reporting of results, as well as the inadequacy of methodological quality were barriers to conducting meta-analysis     . This led to difficulties in producing strict evidence based recommendations. In some areas evidence is lacking due to the poor quality of the studies, where expert opinion suggests otherwise, e.g.exercise. Outcome measures may be decided according to desired treatment effect. Non-pharmacological interventions have previously been suggested to have a significantly better effect on function than medications , reflected by its wider assessment in these studies. However, if this outcome measure is not frequently assessed in pharmacological trials,results could be biased. Guidance on how to conduct good RCTs in FMS, including standardised outcome measures and validated, sensitive instruments is important for future research.
For the treatments that were recommended, effect sizes generally range from medium to high. Although these results give an indication of the efficacy of each treatment, they should be interpreted with some caution as they were only calculated where data was available and could be biased by factors such as whether or not the outcome measure was assessed. We have not collected any information on the cost effectiveness of these treatments. Further analysis of disease duration and baseline values does not reveal any obvious pattern that would affect the outcomes of this review. Review of the abstracts published between 2002 and 2005 revealed no conflicting evidence to that derived from the published articles identified. The assessment of strength of evidence tends to favour pharmacological studies as double blinding and placebo controls are impossible in many non-pharmacological studies. However, most non-pharmacological interventions are safe and have other health benefits. These important factors were taken into account in formulating these recommendations.
These recommendations are the first to be commissioned for FMS, although previous reviews have addressed the area  . The standard operating procedures published by EULAR  were followed. They will be updated every 5 years and it is hoped that good quality clinical trials in this area will add to the evidence currently available. These recommendations should assist health care providers, with a secondary intention to incorporate information into materials for patients. The 9 recommendations included 8 management categories, 3 of which had strong evidence from the current literature, and 3 were based on expert opinion.
Acknowledgements / funding
We acknowledge EULAR for their financial support and the ESCISIT steering
committee for their endorsement.
The following authors have no competing interests to declare: L. Arent-Nielsen, H. Bliddal, S.F. Carville, J. da Silva, B. Danneskiold-Samsøe, F Dincer, K. Longley, G. McCarthy, M. Puszczewicz, P. Sarzi Puttini and A Silman. Declarations: Francis Blotman has been reimbursed by Laboratoires Procter and Gamble, Sanofi-Aventis, Roche and Bristol Meyers Squibb for attending medical conferences and had honorarias for speaking for Laboratoires Pierre Fabre, Servier and Roche. Jaime Branco has been paid by Pierre Fabre and Pfizer for running educational programmes and for speaking at international conferences and reimbursed by Eli Lilly for attending international conferences. Dan Buskila has been reimbursed by Pierre Fabre Company, the manufacturer of Milnacipran, for attending several symposiums and by Pfizer for consulting. Ernest Choy has served on advisory panels of Pierre Fabre Medicament, Jazz Pharmaceutical, Allergan and Pfizer. Ernest Choy has also lectured in meetings organized by Pierre Fabre Medicament, Eli Lilly and Pfizer. The Rheumatology Department received a research grant from Pierre Fabre Medicament. Chris Henriksson has participated in symposia organized by Laboratoires Pierre Fabre and received reimbursement for participation. She has also received fees for written material in proceedings from these symposia. Karl Henriksson has participated in symposia organized by Laboratoires Pierre Fabre and received reimbursement for participation. He has also received fees for written material in proceedings from these symposia. He has held a lecture on pain mechanisms and received a fee from Pfizer. Dr Kosek has participated as a consultant in advisory board meetings (total of 4) for the following pharmaceutical companies; Pfizer, Wyeth and Pierre Fabre. She gave a speech on a satellite symposium organized by Pfizer. She has currently research collaboration with Pierre Fabre. Serge Perrot has been paid by Pfizer, Eli Lilly, Grunenthal, Pierre Fabre and Sanofi Aventis for running educational programmes and participating in advisory boards.
Michael Spaeth has served on advisory panels of Pierre Fabre Medicament, Jazz Pharmaceuticals and Allergan. Michael Spaeth has also lectured in meetings organized by Novartis, Pierre Fabre Medicament and Lilly.
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Copia per l’azienda copia per il sindacato copia per il lavoratore Federazione Sindacale Industria Commercio Artigianato Federazione Sindacale Industria Commercio Artigianato Federazione Sindacale Industria Commercio Artigianato Segreteria Provinciale di Roma – Via Niso 21/23 – 00181 Roma Segreteria Provinciale di Roma – Via Niso 21/23 – 00181 Roma Segreteria Provincial
PROPOLIS AN OVERVIEW Prof. of Microbiology and Immunology, National Research Center Email: email@example.com // firstname.lastname@example.org Propolis, or "bee glue," is a well-known substance that beekeepers find in their hives. Propolis according to research has shown to be effective against a variety of bacteria, viruses, fungi, and molds. It has been shown to be a non-specific immu