There are many reasons for right back pain, the common ones are excessive exercise, cholecystitis, frozen shoulder, trauma and so on. 1. Excessive exercise: Excessive exercise of the right upper limb can cause lactic acid accumulation in the muscles of the right shoulder and back, which can lead to symptoms of right back pain. 2. Cholecystitis: Cholecystitis is often accompanied by biliary colic, which is characterized by severe pain in the right upper abdomen, and the pain may radiate to the right back or shoulder. 3. Frozen shoulder: Frozen shoulder on the right side can cause pain in several locations around the shoulder joint, and inflammation can cause right back pain when it stimulates the infraspinatus or teres minor muscle. 4. Trauma: If the right back is sprained or hit by violence, resulting in right back soft tissue injury or thoracic vertebrae or rib fracture, it can cause right back pain, swelling, limited movement and other symptoms. Right back pain may also be caused by other reasons, such as pleurisy, lung cancer, myofasciitis, etc. If the pain is not relieved after resting, you should go to the hospital in time, improve the examination to clarify the cause of the disease, and target treatment under the guidance of the doctor, so as to avoid delaying the condition.