Effectiveness of Complementary and Alternative Medicine in Fibromyalgia Syndrome: A Network Meta-Analysis

Fibromyalgia is a complex medical condition affecting millions of people around the world, characterized by widespread muscle pain, stiffness, and tenderness in muscles, tendons, and joints. This chronic syndrome represents one of the most prevalent rheumatologic disorders, affecting approximately 2% to 4% of the general population, with greater incidence in women and increasing with age. In addition to skeletal muscle pain, which is the most frequently reported symptom, patients face a series of other debilitating manifestations, including sleep disturbances, chronic fatigue, anxiety, depression, and cognitive impairment. The complexity of this condition not only significantly compromises patients' quality of life but also imposes a considerable financial burden, with studies indicating that nearly one quarter of patients find themselves forced to leave employment within five years after diagnosis.

Currently, although conventional treatments include medications such as duloxetine and pregabalin, approved by the FDA (U.S. Food and Drug Administration) for fibromyalgia, there is growing interest in complementary and alternative therapies, especially acupuncture, which was recommended by the European League Against Rheumatism guidelines as first-line treatment.

This study represents the first comprehensive network meta-analysis to evaluate different complementary and alternative medicine treatments for fibromyalgia. The researchers conducted a systematic search of Chinese and English databases from inception through April 2023, focusing on prospective controlled trials examining complementary and alternative therapies in patients with fibromyalgia. The rigorous methodology included only randomized controlled studies published in Chinese or English, with participants diagnosed according to criteria established by the American College of Rheumatology or the Chinese Medical Association. The interventions studied encompassed any complementary and alternative medicine treatment, used alone or in combination, compared with oral medication or conventional treatments.

The primary outcomes assessed included pain improvement via the Visual Analog Scale, sleep quality via the Pittsburgh Sleep Quality Index, functional impact via the Fibromyalgia Impact Questionnaire, and psychological state via the Hamilton Depression Rating Scale. Statistical analysis was performed using Stata 16.0 software, employing mean differences and 95% confidence intervals, with assessment of literature quality and potential biases.

The research analyzed 41 studies involving 2,877 patients with fibromyalgia and 20 different treatment modalities. The network meta-analysis results revealed significant findings about the efficacy of complementary and alternative therapies. For pain relief, measured by the Visual Analog Scale, the combination of acupuncture with massage emerged as the most effective treatment, presenting a 77.6% probability of reducing pain scores, followed by the combination of electroacupuncture with cupping therapy with 75.3% efficacy. As standalone therapies, massage demonstrated 71.7% efficacy and acupoint application 70.7%.

In the assessment of functional impact via the Fibromyalgia Impact Questionnaire, the acupuncture-massage combination again showed superiority with 99.2% probability of improvement, followed by acupoint application with 86.6%. For reducing the number of tender points, umbilical acupuncture presented the highest efficacy with 85.7% probability, followed by electroacupuncture with 70.3%. As for sleep quality, electroacupuncture demonstrated 98.5% efficacy in reducing Pittsburgh Index scores, while for depressive symptoms, abdominal acupuncture showed 82.2% probability of improvement on Hamilton Scale scores.

The clinical implications of these findings are substantial for both patients and healthcare professionals. The results suggest that complementary and alternative therapies, particularly when combined, offer significant benefits in fibromyalgia management, surpassing conventional treatments in several aspects. For patients, this represents hope for more effective therapeutic options with a better safety profile, since only 6 types of treatments reported adverse reactions, all mild and including skin bruising and dizziness, which resolved without need for additional treatment. The combination of acupuncture with massage emerges as a particularly promising approach for pain relief and functional improvement, while specialized techniques such as umbilical and abdominal acupuncture show specific efficacy for different aspects of the syndrome.

For clinicians, these data provide robust evidence to incorporate complementary therapies into the treatment plan, offering a more holistic approach that addresses not only pain but also the psychological and sleep aspects frequently compromised in fibromyalgia. The demonstrated efficacy of electroacupuncture in sleep improvement and abdominal acupuncture in depressive symptoms suggests that different modalities can be strategically combined to address the multiple aspects of this complex syndrome.

The study has some important limitations that should be considered when interpreting the results. First, inclusion was limited to Chinese and English literature, potentially excluding studies published in other languages and limiting the global perspective of the findings. Additionally, for some therapeutic modalities, only one or two studies were available, which may introduce biases and affect the generalizability of the results. The nature of the interventions makes complete blinding of participants challenging, since external treatments often require interaction between practitioner and patient, potentially influencing perception and response to treatment.

Another limiting aspect is the absence of an established gold standard for fibromyalgia assessment, with measures such as the Visual Analog Scale and the Fibromyalgia Impact Questionnaire depending significantly on patients' subjective experience, raising questions of objectivity. Despite these limitations, the study provides convincing evidence that complementary and alternative therapies, especially when combined, represent safe and effective options for fibromyalgia management. The findings support the European guidelines' recommendation to consider these therapies as first-line treatment, offering patients valuable alternatives to conventional medications, with potential to significantly improve their quality of life through a more comprehensive and personalized approach to the treatment of this complex and debilitating syndrome.