I had the flu last week. I was told it was type A...? Of course I had all over body aches, but areas where I ve had previous injuries ached the most. Once I began to recover and the general body aches deminished, I began to experience significant lower back pain which has continued now for several days. I do have an old injury of the lower back, but it has not bothered me for years. Is this normal or have I done something to my back somehow?
Hello, I have studied your case. Post viral illness back pain is common. And also check your it B12 and it D3 level.HLA B 27 blood test with RA test may rule out spondylitis. Medication like methylcobalamine and analgesic will reduce pain. You can do yoga exercises and focus on spine extension exercises. You may consult physiotherapist for guidance. He may start TENS, or ultrasound which is helpful in your case. If required you may need MRI spine or x-ray spine. If you find this answer helpful do not hesitate to rate this answer at end of discussion. Hope this helps. Wish you a speedy recovery.  Take care