<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi I have been training for my first 12 marathon and I know that I will be sore etc after a run. But I have noticed I seem to be taking longer to recover. I have had lower back pain for the last 18 months I have had x-rays and a Ct scan and nothing showed. I am taking a 24 tab box of nurofen a week and also rubbing voltaren gel on my sore parts.Not to sure what to do?  <response>: Hello, Welcome at Chat Doctor. 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 backbone.-Abnormal posture.-Chronic muscle strain due to working in odd conditions.-Lumber spondylosisThis is a degenerative disease of spine various others. By looking at your details I shall advise you to consult to an orthopedic doctor. You should ask for complete investigation including complete blood examination an 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. 