Case report

A previously well 19-year-old man presented to hospital with weakness and sensory disturbance. He had developed central back pain the previous evening. After a few hours, he developed weakness in his right hand. Within 30 min his legs were weak and he could no longer bear his weight. His symptoms persisted into the next morning and he also became aware of an altered sensation down his left leg and thorax and urinary frequency.

On examination, there was a right-sided Horner's syndrome, distal weakness in the right arm and …