3 months ago, During an operation of my mother, something went wrong in Anesthesia injection in spinal cord. She lost control on that leg, and intensive pain started from lower back (where needle of injection was placed). However after few days leg started some movements and got recovered, but the pain is still constantly. Since few days pain is getting increasing day by day. The doctor who gave injection told that this pain will automatically be gone after 2 months and prescribed a tablet "Pregabid-75" twice a day. But tablet only work for pain for limited time. My mother feels hell during pain. Need proper treatment. Please give suggestions.