56-year-old Mr F started having a pain in his right testicle 15 years ago. It came without any known reason and gradually got worse – the pain spread to his right groin and then to the lower abdomen and back. Over the years he had seen many doctors and had various examinations but no explanation could be given. None of the medications he had tried really worked. The latest treatment he had was given by a pain specialist, who did a lumber puncture and sent electrodes into the vertebral canal...

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