Most common causes of low back pain :- Excessive strains Sprains Disc degeneration Disc herniation / disc prolapse Spondylolysis Spondylolisthesis Osteoporosis Spine infection – bacterial infection / Tuberculosis infection in spine Abnormal curvature of spine Inflammation in spine Sacroiliatis Posture related such as improper bending , sitting or standing Cancer in spine / Tumour in spine