Study of RTMS Analgesic Effect in Chronic Neuropathic Pain,

Conduct of study: * Entry into the study: After informed consent, patients will be randomised. The physician responsible for conducting neurostimulation sessions will make the randomization via an interactive web response system (IWRS). Only this physician will have the knowledge of the group allocated to the patient. * Baseline : Patients, will record on a diary form, a daily Visual Numeric Scale(VNS) of Pain Intensity for 1 week. * Treatment sessions: after the baseline, sessions of neurostimulation will begin for seven weeks. * After the end of neurostimulation sessions, patients will be followed for 2 weeks. * Throughout their participation in the study, patients will plot on a diary form their daily VNS.