Soreness and pain in the back of the shoulder are common shoulder and back symptoms, and there are many reasons for this, as follows: 1. The most common chronic strain injury is probably caused by frozen shoulder, and most patients have a history of fatigue or long-term ambulatory work because of their work, which can lead to rotator cuff injury after a long time, and the movement will be limited to a certain extent. If the pain is in the back of the right shoulder, it may also be caused by myocardial ischemia, especially in hypertensive patients, the electrocardiogram will have obvious changes of myocardial ischemia, and it is necessary to monitor the blood pressure and improve the blood supply to the heart with drugs. 3. can be improved. Therefore, when the shoulder and back are sore and painful, it is important to identify the cause and treat the symptoms in a timely manner.