This patient presents with back pain most consistent with ***. Differential diagnoses includes lumbago versus musculoskeletal spasm / strain versus sciatica.*** No back pain red flags on history or physical. Presentation not consistent with malignancy (lack of history of malignancy, lack of B symptoms), fracture (no trauma, no bony tenderness to palpation), cauda equina (no bowel or urinary incontinence/retention, no saddle anesthesia, no distal weakness), AAA, viscus perforation , pulmonary embolism, renal colic, pyelonephritis (afebrile, no CVAT, no urinary symptoms). Given the clinical picture, no indication for imaging at this time.***

Plan: pain control, supportive care, reassess