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Chronic Fatigue Syndrome/Myalgic Encephalomyelitis Is a Legitimate Disease That Needs Proper Diagnosis and Treatment, Says IOM

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Editor's Note: You can read and download the full report HERE.

Press Release: National Academies, February 10, 2015/ WASHINGTON – Myalgic Encephalomyelitis/Chronic Fatigue Syndrome — commonly referred to as ME/CFS — is a legitimate, serious, and complex systemic disease that frequently and dramatically limits the activities of affected individuals, says a new report from the Institute of Medicine.  The committee that wrote the report developed new diagnostic criteria for the disorder that includes five main symptoms.  In addition, it recommended that the disorder be renamed “Systemic Exertion Intolerance Disease” and be assigned a new code in the International Classification of Diseases, Tenth Edition.
 
“Diagnosing ME/CFS often is a challenge, and seeking and receiving a diagnosis can be frustrating due to the skepticism of health care providers about these patients and the serious nature of their disease,” said committee chair Ellen Wright Clayton, Craig-Weaver Professor of Pediatrics and professor of law at Vanderbilt University.  “The new diagnostic criteria will make it easier for clinicians to recognize and accurately diagnose patients in a timely manner, as well as allow a large percentage of currently undiagnosed patients to receive appropriate care.” 
 
Between 836,000 and 2.5 million Americans suffer from ME/CFS, and an estimated 84 percent to 91 percent of people with ME/CFS are not diagnosed.  The disease’s symptoms can be treated, even though a cure does not exist.  Its cause remains unknown, although in some cases symptoms have been triggered by an infection.  Less than one-third of medical schools include ME/CFS-specific information in the curriculum.  Sixty-seven percent to 77 percent of patients said it took more than a year to receive a diagnosis; about 29 percent of these patients said it took more than five years.  The direct and indirect economic costs of ME/CFS to society have been estimated at $17 billion to $24 billion annually, $9.1 billion of which has been attributed to lost household and job productivity. 
 
The committee recommended that physicians diagnose ME/CFS if the diagnostic criteria are met following an appropriate history, physical examination, and medical work-up.
 
Diagnosis of ME/CFS requires that a patient have the following three core symptoms:

  • A substantial reduction or impairment in the ability to engage in pre-illness levels of activities that persists for more than six months and is accompanied by fatigue — which is often profound — of new or definite onset, not the result of ongoing excessive exertion and not substantially alleviated by rest
  • The worsening of patients’ symptoms after any type of exertion — such as physical, cognitive, or emotional stress — known as post-exertional malaise
  • Unrefreshing sleep

At least one of the two following manifestations is also required:

  • Cognitive impairment
  • The inability to remain upright with symptoms that improve when lying down — known as orthostatic intolerance

 These symptoms should persist for at least six months and be present at least half the time with moderate, substantial, or severe intensity to distinguish ME/CFS from other diseases.
 
The proposed criteria will not improve the diagnosis and care of patients unless health care providers use them, the committee recognized.  Therefore, it recommended that the U.S. Department of Health and Human Services develop a toolkit for screening and diagnosing patients with ME/CFS in a wide array of clinical settings, including primary care practices, emergency departments, and mental health clinics.
 
To convey the complexity and severity of ME/CFS, the committee recommended that the disorder be renamed “Systemic Exertion Intolerance Disease” (SEID).  The committee, along with many ME/CFS patients, believed the term “chronic fatigue syndrome” perpetuates misunderstanding of the illness and dismissive attitudes from health care providers and the public.  The term “myalgic encephalomyelitis” was deemed an inappropriate name by the committee, because myalgia, or muscle pain, is not a core symptom of the disease and because there is inconclusive evidence of brain inflammation in ME/CFS patients.  SEID captures the central characteristic of the disease that exertion of any sort can adversely affect several organ systems and many aspects of patients’ lives, often seriously and for long periods.  Individuals who meet the proposed criteria, whether or not they have already been diagnosed with ME/CFS, should be diagnosed with SEID, the committee said.
 
In addition, research on ME/CFS is urgently needed, especially given the number of people affected, because too little is known about the causes, development, and progression of the disease, or about effective treatment.   Future research could lead to findings that refine the diagnostic criteria and understanding of ME/CFS subtypes.  Therefore, the committee recommended that a multidisciplinary group re-examine the proposed criteria after five years or sooner if firm evidence supports the need for modification.
 
“This disorder is often devastating for those who suffer from it,” said Victor Dzau, president of the Institute of Medicine.  “The diagnostic criteria offered in this report are intended to promote prompt diagnosis for patients and enhance treatment, as well as improve public understanding of the disease.”    
 
The study was sponsored by the Office on Women’s Health within the U.S. Department of Health and Human Services, National Institutes of Health, Centers for Disease Control and Prevention, U.S. Food and Drug Administration, Agency for Healthcare Research and Quality, and U.S. Social Security Administration.  Established in 1970 under the charter of the National Academy of Sciences, the Institute of Medicine provides independent, objective, evidence-based advice to policymakers, health professionals, the private sector, and the public.  The National Academy of Sciences, National Academy of Engineering, Institute of Medicine, and National Research Council make up the National Academies.  A committee roster follows.
 
Contacts: 
Jennifer Walsh, Senior Media Relations Officer
Chelsea Dickson, Media Relations Associate
Office of News and Public Information
202-334-2138; e-mail news@nas.edu
http://national-academies.com/newsroom
Twitter: @NAS_news and @NASciences
 
Pre-publication copies of Beyond Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: Redefining an Illness are available from the National Academies Press on the Internet at http://www.nap.edu or by calling 202-334-3313 or 1-800-624-6242. Reporters may obtain a copy from the Office of News and Public Information (contacts listed above).
 
#       #       #
 
INSTITUTE OF MEDICINE
Board on the Health of Select Populations
 
Committee on the Diagnostic Criteria for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
 

Ellen W. Clayton, M.D., J.D.1 (chair)
Craig Weaver Professor of Pediatrics,
Professor of Law, and
Co-Founder
Center for Biomedical Ethics and Society
Vanderbilt University
Nashville
 
Margarita Alegria, Ph.D., M.A.1
Professor of Psychology
Department of Psychiatry
Harvard Medical School, and
Director
Center for Multicultural Mental Health Research
Cambridge Health Alliance
Somerville, Mass.
 
Lucinda Bateman, M.D.
Director
Fatigue Consultation Clinic
Salt Lake City
 
Lily Chu, M.D.
Board Member
International Association of Chronic Fatigue Syndrome / Myalgic Encephalomyelitis, and
Board Member
Stanford University's ME/CFS Initiative 
Burlingame, Calif.
 
Charles S. Cleeland, Ph.D.
McCullough Professor of Cancer Research, and
Chair
Department of Symptom Research
M.D. Anderson Cancer Center
University of Texas
Houston
 
Ronald W. Davis, Ph.D. 2
Professor of Biochemistry and Genetics, and
Director, Stanford Genome Technology Center
School of Medicine
Stanford University
Stanford, Calif.
 
Betty A. Diamond, M.D.1
Chief
Autoimmune Disease Center
The Feinstein Institute for Medical Research
Manhasset, N.Y.
 
Theodore G. Ganiats, M.D.1
Professor
Department of Family Medicine and Community Health
Miller School of Medicine
University of Miami
Miami
 
Betsy Keller, Ph.D.
Professor
Department of Exercise and Sport Sciences
Ithaca College
Ithaca, N.Y.
 
Nancy Klimas, M.D.
Chair of Clinical Immunology
Nova Southeastern University
Ft. Lauderdale-Davie, Fla.
 
A. Martin Lerner, M.D., Ph.D.
Professor of Infectious Diseases
William Beaumont School of Medicine
Oakland University
Beverly Hills, Mich.
 
Cynthia D. Mulrow, M.D.1
Senior Deputy Editor
Annals of Internal Medicine, and
Professor of Medicine
Department of Medicine
University of Texas Health Science Center
San Antonio
 
Benjamin Natelson, M.D.
Director
Pain and Fatigue Study Center
Mount Sinai Beth Israel
New York City
 
Peter Rowe, M.D.
Director
Chronic Fatigue Clinic
Johns Hopkins Children's Center
Baltimore
 
Michael L. Shelanski, M.D., Ph.D.1
Francis Delafield Professor and Chairman
Department of Pathology and Cell Biology
College of Physicians and Surgeons
Columbia University
New York City
 
 
STAFF
 
Carmen Mundaca-Shah
Study Director

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One thought on “Chronic Fatigue Syndrome/Myalgic Encephalomyelitis Is a Legitimate Disease That Needs Proper Diagnosis and Treatment, Says IOM”

  1. IanH says:

    They renamed MCS into
    idiopathic environmental intolerance

    so I suppose you could rename ME/CFS into
    systemic exertion intolerance disease

    at least they have added the word “disease” because renaming MCS into IEI did nothing to help those with MCS/IEI which is still ignored or considered a “faulty illness belief”

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