CONCISE REVIEW FOR CLINICIANSImproving the Recognition and Diagnosis of Fibromyalgia
Section snippets
UNDERDIAGNOSIS
Despite improved understanding of its pathologic processes, FM remains undiagnosed in as many as 3 out of 4 people with the condition (Data on file. Decision Resources report 2009. Pfizer, New York, NY). Diagnosis time averages 5 years,11 resulting in delayed treatment and potentially suboptimal medical care. Women currently account for 80% to 90% of cases diagnosed using the American College of Rheumatology (ACR) 1990 criteria for FM (prevalence, 3.4% in women vs 0.5% in men).1 Women are more
IMPORTANCE OF IMPROVED RECOGNITION AND DIAGNOSIS
Establishing the diagnosis of FM is an essential component of successful management.4 Many patients with FM have been living with chronic pain and other troubling and disabling symptoms for extended periods. Primary care practices undoubtedly see more patients with FM than is currently appreciated. When such patients are finally recognized and a diagnosis is confirmed, both clinician and patient clear a major hurdle to more effective management of the disorder.
Research shows that the diagnosis
A PRACTICAL APPROACH TO RECOGNITION AND DIAGNOSIS
Fibromyalgia is a clinical diagnosis based on the disorder's unique clinical characteristics and not solely a diagnosis of exclusion. Like other pain states (eg, migraine), FM is commonly diagnosed in the primary care setting on the basis of characteristic symptoms.
A focused history and physical examination are the cornerstones of FM recognition. No laboratory or radiologic testing is required to diagnose FM. Such tests are necessary only if clinically indicated to evaluate other potential
FORMAL CLASSIFICATION CRITERIA
The ACR criteria for FM (Figure 1) include a history of widespread pain lasting 3 months or longer.31 Widespread pain is defined as pain above and below the waist and on both sides of the body. In addition, axial skeletal pain (in the cervical spine, anterior chest, thoracic spine, or lower back) must be present. According to the ACR, a patient must have pain on digital palpation at 11 of 18 predesignated sites, commonly referred to as tender points, to be diagnosed as having FM. Approximately
DIFFERENTIAL DIAGNOSIS
Current medications should be identified and medication-related pain such as statin-induced muscle pain or opioid-induced hyperalgesia ruled out. Identification of disorders that can mimic FM (eg, hypothyroidism and inflammatory rheumatic diseases) or that are frequent comorbid conditions in patients with FM (eg, RA, osteoarthritis, systemic lupus erythematosus, spinal stenosis, neuropathies, sleep disorders such as sleep apnea, and mood and anxiety disorders) is essential so that appropriate
CONCLUSION
Fibromyalgia can have a profound effect on a patient's quality of life. Despite greater interest in and awareness of the disorder than ever before, FM remains underdiagnosed and undertreated. A greatly improved understanding of FM and its pathophysiologic underpinnings has helped explain the varied and often complex constellation of FM signs and symptoms, resulting in effective new treatment approaches.
Fibromyalgia is a clinical diagnosis that, similar to other chronic pain states such as
Acknowledgments
Editorial support was provided by Dr Gayle Scott, PharmD, of UBC Scientific Solutions and funded by Pfizer.
Questions About Fibromyalgia
- 1.
Which one of the following triad of symptoms is the most typical presentation of fibromyalgia (FM)?
- a.
Pain, anorexia, and elevated creatine phosphokinase levels
- b.
Pain, mild dysphasia, and ataxia
- c.
Pain, disturbed sleep, and fatigue
- d.
Pain, paresthesia, and depression
- e.
Pain, swollen joints, and elevated erythrocyte sedimentation rate
- a.
- 2.
Which one of the following best describes the pathophysiology of FM pain?
- a.
Aberrant processing of painful stimuli in the central nervous system
- b.
Diffuse
- a.
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Dr Arnold has received grants/research support from Eli Lilly and Company, Pfizer, Cypress Biosciences, Wyeth Pharmaceuticals, Boehringer Ingelheim, Allergan, and Forest Laboratories. She is a consultant for Eli Lilly and Company, Pfizer, Cypress Biosciences, Wyeth Pharmaceuticals, Boehringer Ingelheim, Forest Laboratories, Allergan, Takeda, UCB, Theravance, AstraZeneca, and sanofi-aventis. Dr Clauw has received grants/research support from Pfizer and Forest Laboratories. He is a consultant for Pfizer, Eli Lilly and Company, Forest Laboratories, Cypress Biosciences, Pierre Fabre Pharmaceuticals, UCB, and AstraZeneca. Dr Clauw is a member of the advisory boards for Pfizer, Eli Lilly and Company, Forest Laboratories, Cypress Biosciences, Pierre Fabre Pharmaceuticals, UCB, and AstraZeneca. Dr McCarberg has received honoraria from Cephalon, Eli Lilly and Company, Endo Pharmaceuticals, Forest Laboratories, Merck & Co., Pfizer, and Purdue Pharma. The FibroCollaborative group was sponsored by Pfizer.
A list of the additional members of the FibroCollaborative appears on page 464
A question-and-answer section appears at the end of this article.
Additional Members of the FibroCollaborative. Kenneth Barrow, PA-C, MHS, Independence Back Institute, Wilmington, NC; Lucinda Bateman, MD, Fatigue Consultation Clinic Inc, Salt Lake City, UT; Larry Culpepper, MD, MPH, Boston University, Boston, MA; Cassandra Curtis, MD, American Health Network, Greenfield, IN; Yvonne D'Arcy, MS, CRNP, CNS, Suburban Hospital-Johns Hopkins Medicine, Bethesda, MD; L. Jean Dunegan, MD, JD, Hillsdale Community Health Center, Brighton, MI; Kevin B. Gebke, MD, Indiana University, Indianapolis; Robert Gerwin, MD, Pain and Rehabilitation Medicine, Bethesda, MD; Don L. Goldenberg, MD, Newton-Wellesley Hospital, Newton, MA; James I. Hudson, MD, ScD, Harvard University, Belmont, MA; Rakesh Jain, MD, MPH, Clinical Research Center, Lake Jackson, TX; Arnold L. Katz, MD, Overland Park Regional Medical Center, Overland Park, KS; Andrew G. Kowal, MD, Tufts University, Burlington, MA; Charles Lapp, MD, Duke University, Charlotte, NC; Philip J. Mease, MD, Swedish Medical Center, Seattle, WA; Danielle Petersel, MD, Pfizer Inc, New York, NY; I. Jon Russell, MD, PhD, University of Texas, San Antonio; Stephen M. Stahl, MD, PhD, University of California, San Diego; Dennis C. Turk, PhD, University of Washington, Seattle; and Alvin F. Wells, MD, PhD, Rheumatology & Immunotherapy Center, Oak Creek, WI.