Treatment of Fibromyalgia with Repetitive Transcranial Magnetic Stimulation (rTMS)

Fibromyalgia is a chronic pain condition that affects up to 6.6% of the population, predominantly women. It is characterized by widespread musculoskeletal pain, fatigue, sleep disturbances, and emotional distress. While pharmacological treatments and lifestyle modifications remain the cornerstone of therapy, many patients report limited relief. For these individuals, Repetitive Transcranial Magnetic Stimulation (rTMS) offers new hope as a safe, non-invasive neuromodulation technique.

Repetitive Transcranial Magnetic Stimulation (rTMS) involves delivering magnetic pulses to targeted regions of the brain, most commonly the primary motor cortex (M1) or the dorsolateral prefrontal cortex (DLPFC). High-frequency stimulation (typically 10 Hz) increases cortical excitability, while low-frequency (1 Hz) reduces it. In fibromyalgia, rTMS aims to normalize dysfunctional brain networks involved in pain processing, emotional regulation, and quality of life.

Studies show that patients with fibromyalgia often suffer from central sensitization—a heightened response to pain due to abnormal processing in the brain and spinal cord. Functional imaging reveals altered connectivity between the thalamus, insula, somatosensory cortex, and limbic areas, which contributes to amplified pain and emotional dysregulation. By modulating these areas, rTMS may reduce pain perception and improve overall well-being.

A large body of scientific evidence, including meta-analyses and randomized controlled trials, supports the use of rTMS for improving various aspects of fibromyalgia:

•    A 2023 umbrella review encompassing 11 systematic reviews concluded that high-frequency rTMS targeting the M1 significantly reduces pain intensity, especially at short-term follow-ups (1–4 weeks). 

•    A landmark 2021 meta-analysis of 18 trials and 643 patients found that rTMS significantly improved Fibromyalgia Impact Questionnaire (FIQ) scores, with a stronger effect seen in older patients. These benefits persisted for at least two weeks after the final session, with notable improvements in pain, anxiety, and depression.

•    A placebo-controlled PET imaging study from France showed that patients receiving high-frequency rTMS to the motor cortex had significant improvements in quality of life, particularly in emotional and social dimensions. These changes were associated with increased brain metabolism in the right medial temporal region, suggesting a neurophysiological basis for the observed benefits.

•    Another meta-analysis confirmed that rTMS significantly improves general health and quality of life when compared to sham treatments, and may also reduce pain and depressive symptoms. The benefits were most pronounced at one-month follow-up, with no serious side effects reported.

While individual responses can vary, most studies agree on the following potential benefits:

•    Reduction in chronic widespread pain

•    Improved quality of life, particularly in mental and emotional well-being

•    Reduced fatigue and cognitive fog

•    Possible mood and anxiety symptom relief

•    Minimal side effects and excellent tolerability

Repetitive Transcranial Magnetic Stimulation (rTMS) has an excellent safety profile, with most patients experiencing only mild side effects such as temporary scalp discomfort or light headache. No serious adverse events or cognitive impairments have been reported across studies. Sessions are short (typically 20–30 minutes), and patients can return to normal activities immediately afterward.

Repetitive Transcranial Magnetic Stimulation (rTMS) may be especially beneficial for:

•    Patients with chronic, treatment-resistant fibromyalgia

•    Individuals with comorbid depression or anxiety

•    Patients seeking a non-pharmacological alternative due to medication side effects

•    Those who wish to improve quality of life beyond pain relief