Transcranial Magnetic Stimulation Applications in Neuropathic Pain Management

Neuropathic pain arises from lesions or dysfunction in the somatosensory system and often proves refractory to conventional pharmacotherapy. Transcranial magnetic stimulation (TMS) offers a non-invasive means to modulate cortical excitability through induction of electric currents in targeted brain regions. Repetitive TMS (rTMS), delivered at varying frequencies, can engage descending inhibitory pathways, alter neurotransmitter release and reduce central sensitisation. Clinical protocols typically focus on the primary motor cortex (M1) or dorsolateral prefrontal cortex, with high-frequency stimulation over M1 shown to yield the most consistent analgesic benefit. Maintenance regimens extend initial induction sessions with periodic booster treatments to sustain relief. Despite promising safety and tolerability profiles, heterogeneity in stimulation parameters and in patient populations has complicated the establishment of standardised clinical guidelines. Ongoing studies aim to refine coil designs, targeting strategies and biomarkers of response to optimise individual outcomes and integrate rTMS into multidisciplinary pain management pathways worldwide.

Research from Nature Portfolio

Recent studies have evaluated navigation-guided high-frequency rTMS over M1 in patients with chronic neuropathic pain of the upper limb. In a sham-controlled, parallel-group trial, daily 10 Hz stimulation for one week followed by weekly maintenance did not achieve a statistically significant separation in mean pain diary scores at week 9, but trends favoured active rTMS in reducing pain-related disability. Safety was confirmed by the absence of serious adverse events, and improvements in functional measures suggest that rTMS may enhance quality of life even when analgesic thresholds are not uniformly met. These findings underscore the potential of personalised navigation and optimised dosing schedules to improve clinical efficacy in focal neuropathic pain syndromes.

Transcranial Magnetic Stimulation Applications in Neuropathic Pain Management publication trend

The graph below shows the total number of articles in transcranial magnetic stimulation applications in neuropathic pain management across all publications each year (not limited to Nature Index journals).

Technical terms

Neuropathic pain: Pain arising from damage or disease affecting the somatosensory nervous system.

Repetitive transcranial magnetic stimulation (rTMS): A technique that delivers trains of magnetic pulses to modulate cortical excitability over consecutive sessions.

Primary motor cortex (M1): The region of the frontal lobe responsible for voluntary motor control and a frequent target for analgesic rTMS.

Sham stimulation: A control procedure that mimics rTMS without inducing significant cortical currents, used to maintain blinding in trials.

Central post-stroke pain (CPSP): A type of neuropathic pain resulting from a cerebrovascular lesion affecting central somatosensory pathways.

References

1. Repetitive transcranial magnetic stimulation focusing on patients with neuropathic pain in the upper limb: a randomized sham-controlled parallel trial. Scientific Reports (2024).
2. Repetitive transcranial magnetic stimulation in central post-stroke pain: a meta-analysis and systematic review of randomized controlled trials. Frontiers in Neuroscience (2024).
3. Repetitive transcranial magnetic stimulation of the primary motor cortex in management of chronic neuropathic pain: a systematic review. Scandinavian Journal of Pain (2020).
4. Effect of Repetitive Transcranial Magnetic Stimulation on Pain Management: A Systematic Narrative Review. Frontiers in Neurology (2020).