This report describes the medical record of a patient whom after undergoing spinal anesthesia with hyperbaric bupivacaine 15 mg (0.5%), plus fentanyl 25mcg for an open prostatectomy presented perineal, lumbar, and lower member pain 24 hours following local anesthesia administration. Mechanical and electromyographic compromise were discarded by tomography, resonance, and electromyography. Final diagnosis was transient neurological syndrome. In this case, bupivacaine was the causative agent. Duration of symptoms for nearly three months is a novel finding with respect to the time of recovery, regardless of its association with surgical site infection.