Hi, welcome to our site. I am Dr Saumya Mittal, MD. Read your query. That is a very significant question and i appreciate your problem. I will try my best to answer your query In view of the history, I am pretty sure that he has injured his back. The exact localization may not be possible without a clinical examination. Yet, the possibility of the spine or disc damahe is high followed by a possibility of a muscle tear. I would suggest testing a MRI of the affected area of the spine. You may need to meet a neurologist with the MRI. Depending on the extent of damage, surgery, medicines and physiotherapy are your options. I hope this helps you. Inform the reports mentioned above/if any other so I can be of help further. I have given you the answer to the maximum considering the information provided. The results of the tests could further enhance my answer to you. You can upload them on the site. You can upload them with the query, or if you have a problem, send them to attachments@healthcaremagic.com with Sub: ATTN Your Name . Once we receive the photos or diagnostic reports, my team will send reports / pictures to me. Please do understand that some details could be extracted from a detailed history and examination. Please click on Thanks/Helpful if found useful. Please feel free to ask another query. I would be glad to help you. Looking forward to your return query with the details asked so that I can help you further. (If the answer has helped you, please indicate this) Best of luck. Dr Mittal. MBBS, MD (Internal Medicine), CC (Diabetes Mellitus), DNB (Neurology)