1. Home
  2. Health
  3. Arthritis

How Is Fibromyalgia Diagnosed?

By Carol & Richard Eustice, About.com

Updated: August 20, 2006

About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD

Question: How Is Fibromyalgia Diagnosed?

Fibromyalgia is often difficult to diagnose since its symptoms overlap with many other rheumatic conditions. Are there diagnostic laboratory tests for fibromyalgia? What are the diagnostic criteria for fibromyalgia? What are fibromyalgia tender points? How is fibromyalgia diagnosed?

Answer:

Fibromyalgia Diagnosis Is Difficult

Research shows that people with fibromyalgia typically see many doctors before receiving the diagnosis. One reason for this may be that pain and fatigue, the main symptoms of fibromyalgia, overlap with many other conditions.

  • Fibromyalgia Screening Quiz
  • Doctors often have to rule out other potential causes of these symptoms before making a diagnosis of fibromyalgia.

  • Rheumatism, Rheumatic Disease, And Arthritis: Are They All The Same?
  • No Diagnostic Laboratory Tests For Fibromyalgia

    Another reason fibromyalgia diagnosis remains difficult is that there are currently no diagnostic laboratory tests for fibromyalgia; standard laboratory tests fail to reveal a physiologic reason for pain. Because there is no generally accepted, objective test for fibromyalgia, some doctors unfortunately may conclude a patient's pain is not real, or they may tell the patient there is little they can do.

  • Test Your Knowledge: Fibromyalgia
  • Diagnostic Criteria For Fibromyalgia

    A doctor familiar with fibromyalgia, however, can make a diagnosis based on two criteria established by the American College of Rheumatology:

  • a history of widespread pain lasting more than 3 months
  • the presence of tender points
  • Pain is considered to be widespread when it affects all four quadrants of the body; that is, you must have pain in both your right and left sides as well as above and below the waist to be diagnosed with fibromyalgia.

  • How to Recognize the Signs and Symptoms of Fibromyalgia
  • How To Choose The Right Doctor For You
  • First Visit To The Rheumatologist
    A rheumatologist is a medical doctor who specializes in arthritis and related diseases.

    Fibromyalgia Tender Points

    The American College of Rheumatology also has designated 18 sites on the body as possible tender points. For a fibromyalgia diagnosis, a person must have 11 or more tender points.

  • What are Fibromyalgia Tender Points?
  • One of these predesignated sites is considered a true tender point only if the person feels pain upon the application of 4 kilograms of pressure to the site. People who have fibromyalgia certainly may feel pain at other sites, too, but those 18 standard possible sites on the body are the criteria used for classification.

    Related Resources

  • Fibromyalgia
  • Fibromyalgia Screening Quiz
  • How Is Fibromyalgia Treated?
  • Free Newsletter E-Course: Fibromyalgia 101
    We have designed our free newsletter e-course to guide you to a better understanding of fibromyalgia.

    Source: NIH Publication No. 04-5326, June 2004

    More Arthritis Q&A
  • Explore Arthritis

    More from About.com

    About.com is accredited by the Health On the Net Foundation, which promotes reliable and trusted online health information.
    1. Home
    2. Health
    3. Arthritis
    4. Types of Arthritis
    5. Fibromyalgia
    6. Fibromyalgia Diagnosis - How Is Fibromyalgia Diagnosed?

    ©2008 About.com, a part of The New York Times Company.

    All rights reserved.