Hello, Welcome at HCM. I have read your query. It looks that you are having back pain since long time.There are various reasons for such chronic or long time back pain- -Degenerative disc disease ,where there is age related changes in disc & it becomes decreases in size & resiliency. -Prolapsed disc between the vertebrae of spine. -Arthritis of joints between the vertebrae which forms the back bone. -Abnormal posture. -Chronic muscle strain due to working in odd conditions . -Lumber spondylosis(This is a degenerative disease of spine) & various others. By looking at your details i shall advice you to consult to a orthopedic doctor.You should ask for complete investigation including complete blood examination & a MRI of spine to rule out the disease. At present with mild analgesic like advil ,you may take the help of a good physiotherapist .This will give you relief. Hope this all will help you. With best wishes.