Pain in the back of the right scapula may have the following causes: 1, myofasciitis, myofasciitis can appear pain in the inner side of the scapula, which can radiate to the back, and can be accompanied by symptoms of numbness and weakness in the right shoulder as well as the upper limbs. The pain is especially obvious at night when sleeping under pressure or when exerting oneself. 2. Gallbladder disease, when there is cholecystitis or gallbladder stones, the pain at the right scapula can appear, which is radiating pain. 3. Rib disease. When there is a tumor or metastasis in the rib cage, pain at the back of the scapula can also occur. 4. Lung diseases, when there is a tumor or tuberculosis or inflammation in the lung, pain at the back of the right scapula can also occur, and this should be diagnosed by CT of the lung.