My brother (39 years) has had the same, constant mid-back pain for a year now. Not brought on through injury, the dull ache came and hasn't gone away. He can't enjoy usual day to day life because it is so uncomfortable. Sitting down is the worst, walking alleviates slightly, but standing for too long also ends in great discomfort.
He's tried every painkiller prescribed by the docs and none of these have gone anyway to reducing pain. Had MRI scans and CT scans and nothing visible other than a slight bit of inflammation. This led to a rheumatologist giving a diagnosis of spondyloarthritis, but none of the anti-inflammatory meds have helped. Rheumatologist now says he's less sure it is arthritis given the prolonged and constant pain. Blood test for arthritis is negative.
1 lot of spinal injections from the pain clinic did nothing. Trying a different type later this year but not overly hopeful given nothing else has worked.
Also tried chiropractor, physios, accupuncture, swimming. Nothing helping.
SOS.... what else can we try?! What could it be??