title: Pain in the lower back.
mesh_terms: D001415:Back / Q000033:anatomy & histology; D001416:Back Pain / Q000209:etiology / Q000628:therapy; D003937:Diagnosis, Differential; D006801:Humans; D008159:Lumbar Vertebrae / Q000473:pathology; D013122:Spinal Diseases / Q000503:physiopathology