Treatment of chronic facial pain including cluster headache by repetitive transcranial magnetic stimulation of the motor cortex with maintenance sessions: A naturalistic study

Hasan Hodaj, Jean Pierre Alibeu, Jean François Payen, Jean Pascal Lefaucheur

Research output: Contribution to journalArticle

Abstract

Objective To assess the long-term maintenance of analgesia induced by high-frequency repetitive transcranial magnetic stimulation (rTMS) of the motor cortex contralateral to pain in a naturalistic study of patients with chronic refractory facial pain. Methods 55 patients were included (cluster headache, n = 19; trigeminal neuropathic pain, n = 21; atypical facial pain, n = 15). The rTMS protocol consisted of an "induction phase" of one daily rTMS session for five days per week during two consecutive weeks, followed by a "maintenance phase" of two sessions during one week, then one session in weeks 4 and 6, and a monthly session for the next five months. In a subset of patients, navigated targeting was performed and session duration was shortened from 20-min to 10-min (with the same number of 2000 pulses per session). The analgesic effect of rTMS was assessed on a 0-10 visual numerical scale from 15 to 180 days after treatment initiation. Results All pain measures significantly decreased from baseline to D15: the intensity of permanent pain (5.2 ± 1.6 to 3.2 ± 1.9) and paroxysmal pain (8.6 ± 1.5 to 4.5 ± 3.4), as well as the daily number of painful attacks (5.6 ± 3.1 to 2.3 ± 3.1). The percentage of responders (defined as pain score decrease ≥ 30%) was 73% at D15 and dropped to 40% at D180. The analgesic effect was similar regardless of the type of pain and was significantly lower when session duration was shortened, irrespective of the number of pulses. Conclusion This long-term maintenance rTMS protocol can be a therapeutic option in the clinical management of patients with chronic refractory facial pain, including cluster headache. However, only part of the patients respond to this technique and session duration should not be reduced.

Original languageEnglish (US)
Pages (from-to)801-807
Number of pages7
JournalBrain Stimulation
Volume8
Issue number4
DOIs
StatePublished - 2015
Externally publishedYes

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Keywords

  • Chronic pain
  • Cluster headache
  • Facial pain
  • rTMS
  • Trigeminal neuralgia

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)
  • Biophysics
  • Medicine(all)

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