<s>[INST] severe non stop pain in upper back lower part of shoulder blades in middle. same spot has what looks like huge round bruise been there for over a year now [/INST] Hey, This could be a small swelling compressing on your nerves causing pain. This is just a possibility. Kindly visit your Doctor and he may examine and recommend appropriate management. You may try taking Pregabalin tablets once a day if the pain is very severe. </s>