title: Acute nontraumatic back pain: differential diagnosis in the emergency room.
mesh_terms: D001416:Back Pain / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D004636:Emergency Service, Hospital; D006801:Humans; D008349:Manipulation, Orthopedic; D011602:Psychophysiologic Disorders / Q000175:diagnosis; D013122:Spinal Diseases / Q000175:diagnosis