Right shoulder pain may be caused by acute injury, frozen shoulder, cervical spondylosis, right shoulder joint lesion, rotator cuff injury, pleurisy, lung disease and other factors. 1. Acute injury: the right shoulder area suffers from acute injury, such as external blow, resulting in damage to the bone or soft tissue of the shoulder joint, which will cause pain in the right shoulder area. 2. Frozen shoulder: it may be related to chronic strain injury and other factors, which can cause pain in the right shoulder, and in severe cases, it will lead to limited shoulder movement. 3. Cervical spondylosis: prolonged and excessive bowing of the head may induce cervical spondylosis, which may cause compression of the nerves innervating the right limb, causing right shoulder pain, accompanied by numbness of the right arm, radiating pain in the right arm and other symptoms. 4. Right shoulder joint lesions: such as degenerative osteoarthritis, gouty arthritis, osteomalacia, etc., will lead to pain in the right shoulder area, and in severe cases, will lead to shoulder joint activity limitation. 5. Rotator cuff injury: it may be related to aging and degeneration, chronic strain, acute injury and other factors, which will lead to pain in the right shoulder area, and may be accompanied by shoulder weakness and impaired shoulder joint movement. 6. Pleurisy: it may be related to infectious diseases and tumor diseases, which usually cause obvious chest pain and involve the shoulder and neck, which will cause right shoulder pain, accompanied by coughing and sputum and other symptoms. 7. Lung diseases: for example, tuberculosis or lung tumor, after the aggravation of the lesion will cause right shoulder pain, which may be accompanied by fatigue, fever, hemoptysis and other symptoms. There are many other causes of right shoulder pain, it is recommended to consult a doctor for appropriate examination and treatment, to avoid blindly using their own medication.