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Basically a back pain you have in the shoulder blade region that worsens when you lie down or it’s something you become aware of when you lie down. This could be due to ankylosing spondylitis. This is a genetic condition. Medicines, physiotherapy, exercises and drugs to suppress immunity are the mainstay of treatment.
A back pain that is worse on lying down or felt mainly on lying down can also be due to a tumor within the spinal cord. A neurological examination can pinpoint the site. A CT scan or a MRI will be surely required.
It need not be all this and simply a case of lactic acid deposition in overused muscles—if your work involves too much use of shoulders—like even sitting at the computer for long.
Depending on whether the pain is more on right side or left side, the other possibilities could be stomach ulcers, pancreatitis, or ectopic pregnancy (in females) or from the chest like in heart attack, pericarditis, pleuritis, pneumonia, pulmonary embolus, and aortic dissection, gall stones, duodenal ulcer and liver infection and subdiaphragmatic abscess.
I know the list looks exhaustive and most of it you probably don’t have. But since on net, a confirmed diagnosis is not possible, I am listing all the possibilities. Discuss these possibilities with your doctor. It is difficult to comment beyond this without examining. A comprehensive investigation is required keeping all the points in mind. Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!
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