Back pain. A chief complaint generally not considered among the top 5 most thrilling for EM docs. Hiding among a sea of benign musculoskeletal conditions, however, lurk a handful of diagnoses which will result in irreversible paralysis and severe loss of function for our patients. The trick, of course, is figuring out who needs expensive advanced imaging and who can go home with NSAIDS....read on for a case that definitely falls into the former category....