The vague pain on both sides of the back may be due to the following reasons: First, it may be myofasciitis, a chronic sterile inflammation of the muscles of the back due to long-term exertional strain, commonly found in fitness personnel, or people who often use their shoulders and back to lift things. Secondly, it may be a misalignment of the small joints of the thoracic spine, which compresses the nerve roots bilaterally, resulting in pulling pain in the muscles or skin bilaterally. In addition to pain on both sides, there are obvious pressure points in the middle of the thoracic spine, and if the misalignment is serious, you can also feel a very obvious misalignment of the spinous process, which can be given a reset by a regular massage therapist, and the symptoms can be relieved immediately.