If the patient has discomfort in the middle of the shoulder blade in the back, it may be due to the following reasons: 1. This situation may be caused by the degeneration of the thoracic vertebrae, such as when the patient has misalignment of the small joints of the thoracic vertebrae, or when the osteophytes here, there may be long-term pain and unfavorable activities in the above area, and sometimes the patient may have a feeling of long-term pressure. 2. This situation may be caused by the muscle spasm here, such as after the patient sits for a long time and works, which may lead to muscle spasm here, causing the above symptoms. 3. This condition may be caused by muscle spasm, for example, after the patient has been sitting or standing for a long time, it may lead to muscle spasm in this area, causing the above symptoms. 3. This condition is also common in patients with fasciitis of the back of the shoulder, for example, after the patient has been stimulated by the cold or trauma in this area, it will lead to aseptic inflammation of the deep muscle membrane in this area, resulting in the above symptoms. 4. This condition is also common in patients with heart-related lesions, such as angina pectoris, myocardial infarction, may also be due to the stimulation of the relevant nerves lead to such symptoms.