Brown-Séquard Syndrome

One-sided cord damage creates a neurological pattern that is asymmetric by design. The injured side loses descending motor control and dorsal-column information; the opposite side loses pain and temperature sensation after those fibers cross. In a patient with a stab wound or unilateral cord compression, this split pattern localizes the lesion more effectively than weakness alone. Unlike anterior cord syndrome, which usually produces bilateral motor and pain-temperature deficits with relative dorsal-column preservation, Brown-Séquard syndrome is characterized by lateralized findings. The deficit may look incomplete, but the patient still has an acute spinal cord injury: immobilize the spine, document a formal neurological baseline, preserve cord perfusion, and identify compressive lesions that may require urgent decompression.