Fibromyalgia can no longer be called the ‘invisible’ syndrome

From the FMS News Desk of Jeanne Hambleton

Courtesy Eureka Alert

Reston, Va.—Using single photon emission computed tomography (SPECT), researchers in France were able to detect functional abnormalities in certain regions in the brains of patients diagnosed with fibromyalgia, reinforcing the idea that symptoms of the disorder are related to a dysfunction in those parts of the brain where pain is processed.

“Fibromyalgia is frequently considered an ‘invisible syndrome’ since musculoskeletal imaging is negative,” said Eric Guedj, M.D., and lead author of the study. “Past imaging studies of patients with the syndrome, however, have shown above-normal cerebral blood flow (brain perfusion) in some areas of the brain and below-normal in other areas. After performing whole-brain scans on the participants, we used a statistical analysis to study the relationship between functional activity in even the smallest area of the brain and various parameters related to pain, disability and anxiety/depression.”

In the study, which was reported in the November issue of The Journal of Nuclear Medicine, 20 women diagnosed with fibromyalgia and 10 healthy women as a control group responded to questionnaires to determine levels of pain, disability, anxiety and depression. SPECT was then performed, and positive and negative correlations were determined.

The researchers confirmed that patients with the syndrome exhibited brain perfusion abnormalities in comparison to the healthy subjects. Further, these abnormalities were found to be directly correlated with the severity of the disease. An increase in perfusion (hyperperfusion) was found in that region of the brain known to discriminate pain intensity, and a decrease (hypoperfusion) was found within those areas thought to be involved in emotional responses to pain.

In the past, some researchers have thought that the pain reported by fibromyalgia patients was the result of depression rather than symptoms of a disorder. “Interestingly, we found that these functional abnormalities were independent of anxiety and depression status,” Guedj said.

According to Guedj, disability is frequently used in controlled clinical trials to evaluate response to treatment. Because molecular imaging techniques such as SPECT can help predict a patient’s response to a specific treatment and evaluate brain-processing recovery during follow-up, it could prove useful when integrated into future pharmacological controlled trials.

“Fibromyalgia may be related to a global dysfunction of cerebral pain-processing,” Guedj added. “This study demonstrates that these patients exhibit modifications of brain perfusion not found in healthy subjects and reinforces the idea that fibromyalgia is a ‘real disease/disorder.'”

According to the National Institute of Arthritis and Musculoskeletal and Skin Diseases, fibromyalgia syndrome is a common and chronic disorder characterized by widespread muscle pain, fatigue and multiple tender points. Tender points are specific places—for example, on the neck, shoulders, back, hips, and upper and lower extremities—where people with fibromyalgia feel pain in response to slight pressure. The syndrome is one of the most common causes of musculoskeletal pain and disability and affects three to six million, or as many as one in 50, Americans. Between 80 and 90 percent of those diagnosed are women.

Although fibromyalgia is often considered an arthritis-related condition, it does not cause inflammation or damage to the joints, muscles or other tissues. Like arthritis, however, the significant pain and fatigue caused by fibromyalgia can interfere with a person’s ability to carry out daily activities.

Coauthors of “Clinical Correlate of Brain SPECT Perfusion Abnormalities in Fibromyalgia” include Eric Guedj, Serge Cammilleri and Olivier Mundler, Service Central de Biophysique et de Médecine Nucléaire, AP-HM Timone; Jean Niboyet, Patricia Dupont, Eric Vidal and Jean-Pierre Dropinski, Unité d’Etude et de Traitement de la Douleur, Clinique La Phocéanne, all of Marseille, France.


About Society of Nuclear Medicine – SNM

SNM is an international scientific and medical organization dedicated to raising public awareness about what molecular imaging is and how it can help provide patients with the best health care possible. SNM members specialize in molecular imaging, a vital element of today’s medical practice that adds an additional dimension to diagnosis, changing the way common and devastating diseases are understood and treated.

SNM’s more than 17,000 members set the standard for molecular imaging and nuclear medicine practice by creating guidelines, sharing information through journals and meetings and leading advocacy on key issues that affect molecular imaging and therapy research and practice. For more information, visit http://www.snm.org.

Contact: Amy Shaw – ashaw@snm.org – 703-652-6773 – Society of Nuclear Medicine

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About jeanne hambleton

Journalist-wordsmith, former reporter, columnist, film critic, editor, Town Clerk and then fibromite and eventer with 5 conferences done and dusted. Interested in all health and well being issues, passionate about research to find a cure and cause for fibromyalgia. Member LinkedIn. Worked for 4 years with FMA UK as Regional Coordinator for SW and SE,and Chair for FMS SAS the Sussex and Surrey FM umbrella charity and Chair Folly Pogs Fibromyalgia Research UK - finding funding for our "cause for a cure" and President and co ordinator of National FM Conferences. Just finished last national annual Fibromyalgia Conference Weekend. This was another success with speakers from the States . Next year's conference in Chichester Park Hotel, West Sussex, will be April 24/27 2015 and bookings are coming in from those who raved about the event every year. I am very busy but happy to produce articles for publication. News Editor of FMS Global News on line but a bit behind due to conference. A workaholic beyond redemption! The future - who knows? Open to offers with payment. Versatile and looking for a regular paid column - you call the tune and I will play the pipes.
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