Gabapentin Shown Effective for Fibromyalgia PainJune 12, 2007New research supported by the National Institutes of Health's National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) shows that the anticonvulsant medication gabapentin, which is used for certain types of seizures, can be an effective treatment for the pain and other symptoms associated with the common, often hard-to-treat chronic pain disorder, fibromyalgia. In the NIAMS-sponsored, randomized, double-blind clinical trial of 150 women (90 percent) and men with the condition, Lesley M. Arnold, M.D., director of the Women's Health Research Program at the University of Cincinnati College of Medicine, and her colleagues found that those taking gabapentin at dosages of 1,200 to 2,400 mg daily for 12 weeks displayed significantly less pain than those taking placebo. Patients taking gabapentin also reported significantly better sleep and less fatigue. For the majority of participants, the drug was well tolerated. The most common side effects included dizziness and sedation, which were mild to moderate in severity in most cases. NIAMS Director Stephen I. Katz. M.D., Ph.D., remarked that "While gabapentin does not have Food and Drug Administration approval for fibromyalgia, I believe this study offers additional insight to physicians considering the drug for their fibromyalgia patients. Fibromyalgia is a debilitating condition for which current treatments are only modestly effective, so a study such as this is potentially good news for people with this common, painful condition." Fibromyalgia is a chronic disorder characterized by chronic, widespread muscle pain and tenderness, and is frequently accompanied by fatigue, insomnia, depression, and anxiety. It affects three million to six million Americans, mostly women, and can be disabling. The precise cause of fibromyalgia in not known, but research suggests it is related to a problem with the central nervous system's processing of pain. As with some other chronic pain conditions, people with fibromyalgia often develop a heightened response to stimuli, experiencing pain that would not cause problems in other people. Yet, unlike many other pain syndromes, there is no physical evidence of inflammation or central nervous system damage. Although gabapentin has little, if any, effect on acute pain, it has shown a robust effect on pain caused by a heightened response to stimuli related to inflammation or nerve injury in animal models of chronic pain syndromes. Researchers have suspected that it might have the same effect in people with fibromyalgia. The new research, published in the April 2007 edition of Arthritis & Rheumatism, indicates the suspicions were correct. Although the researchers cannot say with certainty how gabapentin helps reduce pain, Dr. Arnold says one possible explanation involves the binding of gabapentin to a specific subunit of voltage-gated calcium channels on neurons. "This binding reduces calcium flow into the nerve cell, which reduces the release of some signaling molecules involved in pain processing," she says. How gabapentin improves sleep and other symptoms is less clear, and there are probably different mechanisms involved in fibromyalgia symptoms. "Gabapentin improved sleep, which is an added benefit to patients with fibromyalgia who often report unrefreshing or disrupted sleep," Dr. Arnold says. What is important is that people with fibromyalgia now have a potential new treatment option for a condition with few effective treatments. "Studies like this give clinicians evidence-based information to guide their treatment of patients," says Dr. Arnold. The mission of the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), a part of the Department of Health and Human Services' National Institutes of Health, is to support research into the causes, treatment and prevention of arthritis and musculoskeletal and skin diseases; the training of basic and clinical scientists to carry out this research; and the dissemination of information on research progress in these diseases. For more information about NIAMS, call the information clearinghouse at (301) 495-4484 or (877) 22-NIAMS (free call) or visit the NIAMS website at http://www.niams.nih.gov. The National Institutes of Health (NIH) - The Nation's Medical Research Agency - includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. It is the primary federal agency for conducting and supporting basic, clinical and translational medical research, and it investigates the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit http://www.nih.gov The National Institutes of Health (NIH) |
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| Related Fibromyalgia Current Events and Fibromyalgia News Articles Cognitive dysfunction reversed in mouse model of Down syndrome A study by neuroscientist William C. Mobley, MD, PhD, chair of the Department of Neurosciences at the University of California, San Diego School of Medicine, and colleagues at Stanford University Medical School has demonstrated a possible new approach to slowing the inevitable progression of cognitive decline found in Down's syndrome. Chinese acupuncture affects brain's ability to regulate pain, UM study shows Acupuncture has been used in East-Asian medicine for thousands of years to treat pain, possibly by activating the body's natural painkillers. But how it works at the cellular level is largely unknown. Is cherry juice a new 'sports drink?' Drinking cherry juice could help ease the pain for people who run, according to new research from Oregon Health & Science University presented at the American College of Sports Medicine Conference in Seattle, Wash. Inexpensive drug appears to relieve fibromyalgia pain in Stanford pilot study For Tara Campbell, the onset of her fibromyalgia began slowly with repeated sore throats, fevers and fatigue. By the time she was diagnosed, a year later, she had become so debilitated by flulike symptoms and exhaustion that she often couldn't get off the couch all day. Mayo Clinic study suggests those who have chronic pain may need to assess vitamin D status Mayo Clinic research shows a correlation between inadequate vitamin D levels and the amount of narcotic medication taken by patients who have chronic pain. New guidelines for prescribing opioid pain drugs published A prestigious panel of pain-management experts representing the American Pain Society (APS) www.ampainsoc.org and the American Academy of Pain Medicine (AAPM) has published the first comprehensive clinical practice guideline to assist clinicians in prescribing potent opioid pain medications for patients with chronic non-cancer pain. New guideline for prescribing opioid pain drugs published A national panel of pain management experts representing the American Pain Society (APS) and the American Academy of Pain Medicine (AAPM) has published the first comprehensive, evidence-based clinical practice guideline to assist clinicians in prescribing potent opioid pain medications for patients with chronic non-cancer pain. Fibromyalgia can no longer be called the 'invisible' syndrome 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. Sinusitis patients have pain similar to the elderly and people with arthritis A new analysis led by researchers at Georgetown University Medical Center suggests many patients with sinusitis have aches and pains similar in severity to people in their 80s and those with arthritis or depression. What a Sleep Study Can Reveal About Fibromyalgia Research engineers and sleep medicine specialists from two Michigan universities have joined technical and clinical hands to put innovative quantitative analysis, signal-processing technology and computer algorithms to work in the sleep lab. More Fibromyalgia Current Events and Fibromyalgia News Articles |
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