I have back pain since last 1 year?

Cause: You and your physician need to determine the cause of your back pain and than treat it. Do not suffer without solution.

Depends on severity: Assuming it is not from a tumor, infection or referred from another body system like a kidney stone most back problems can be managed by lifestyle changes like no smoking, controlling weight & by regular exercise. One can start with over the counter medication, activity modification/physical therapy and if no improvement, get an evaluation for a more guided treatment program.