The first step consists of the inclusion of 12 patients followed by the filling by each patient of the RedCap software of five simple numerical scales for 4 weeks . Realization of a brain and medullary MRI to allow neuronavigation. Realization of 5 sessions of rTMS in 5 days during the first week then evaluation (physical examination, questionnaires) in consultation on post-stimulation. Then followed for 28 days in total through self-assessment of pain that will be filled daily on REDCap and last consultation on D28 for further evaluation