The purpose of this study is to evaluate the analgesic effectiveness of direct current stimulation (tsDCS) in the treatment of pelvic pain by comparing three groups:
* Trans-spinal tsDCS stimulation, * Ganglionic tsDCS stimulation, * Placebo (sham) tsDCS stimulation.
Patient aged 18 to 85 years, suffering from pelvic pain for more than one year (excluding musculoskeletal causes).
Patient with stable ongoing medication (analgesic or otherwise) for at least one month.
Patient for whom lack of response to conventional treatments has led the pain specialist or referring physician to consider non-pharmacological therapeutic options.
Patient reporting a pain intensity score >3 on the Numeric Visual Pain Scale (NVPS) during pre-screening.
History of drug addiction.
History of psychiatric disorders likely to interfere with the proper conduct of the study.
Patient with skin lesions in the lumbar region.
Person unable to understand the study protocol.