Protocol Assessment of Motor Cortex rTMS for Treating Neuropathic Pain

Neuropathic pain is frequent and drugs relieves only 50% of the patients. Repetitive transcranial magnetic stimulation (rTMS) at high frequency (HF, usually 10Hz) applied on the primary motor cortex (M1) is an effective treatment of neuropathic pain. For the treatment of chronic pain, the 'classical' HF-rTMS protocol (CHF-rTMS) include one daily session for one or two weeks as an induction phase of treatment followed by a weekly session to produce analgesic effects. However, another type of protocol is based on a more spaced repetition of HF-rTMS sessions (SHF-rTMS), including intervals of several days or weeks between two sessions, but also resulting in a significant pain relief. However, CHF-rTMS and SHF-rTMS have never been compared regarding their analgesic efficacy. Alongside with pain, depression is the other clinical condition for which HF-rTMS is proposed as an effective therapeutic strategy. Another type of rTMS paradigm, called "accelerated intermittent theta burst stimulation" (ACC-iTBS) protocol has been recently proposed for the treatment of depression, combining a high number of pulses delivered per session and a high number of short-duration sessions grouped into a few days of stimulation. However, this type of protocol has never been applied for the treatment of chronic pain patients. Thus, for the first time we propose to compare in a pilot study the efficacy of three different rTMS protocols for the treatment of chronic neuropathic: CHF-rTMS, SHF-rTMS, and…

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Jean-Pascal Lefaucheur, MD, PhD  ·  800-555-5555  ·  Jean-pascal.lefaucheur@aphp.fr

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