Pain medicine

Motor cortex repetitive transcranial magnetic stimulation in fibromyalgia: a multicentre randomised controlled trial

Br J AnaesthPublished Randomised controlled trial

Primary resultResult — go to the resultOdds ratio 3.04 95% CrI 1.26–8.06

Authors' conclusion

Add-on M1-repetitive transcranial magnetic stimulation reduced pain intensity up to 8 weeks in women with fibromyalgia. Although analgesic effects waned, functional improvements remained during extended maintenance at week 16.

Study context

Population
Women aged ≥18 yr with fibromyalgia refractory to best available treatment, Brazil, France and Japan
Participants
101 women
Comparison
10 Hz motor cortex repetitive transcranial magnetic stimulation (rTMS) vs sham stimulation
  • Activen = 52
  • Shamn = 49reference
Primary endpoint
≥50% pain reduction vs baseline
Follow-up
Week 8
Methodological detailsdouble-blind, sham-controlled, multicentre, international, add-on therapy
  • Double-blind
  • Sham-controlled
  • Multicentre
  • International
  • Add-on therapy

Primary result

As reported in the abstract

Odds ratio

3.04

95% CrI 1.26–8.06

Active vs Sham
OR 3.04 (95% CrI 1.26–8.06)

Secondary outcomes

Relative pain reduction (frequentist analysis) · week 8

P = 0.028

OutcomeOR (95% CrI)
≥50% pain reduction · week 16Probability reduced to 34.2% · CrI (Bayesian analysis)0.815 (0.313–2.1)

Fibromyalgia Impact Questionnaire (FIQ) score reduction · week 16

Likelihood of FIQ score reduction
79.1%

Original publication

Motor cortex repetitive transcranial magnetic stimulation in fibromyalgia: a multicentre randomised controlled trial. Br J Anaesth. Published 13 March 2025. doi:10.1016/j.bja.2024.12.045

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