There are more causes of pain below the clavicle above the right chest, usually seen in trauma, mediastinal diseases and chest diseases. 1. Trauma: Trauma to the right upper chest below the collarbone can cause pain in the chest wall, skin, muscles, and soft tissues. If the trauma is severe, it may result in rib fractures, which can cause more severe pain. 2. Mediastinal diseases: such as mediastinal tumors, easy to compress the adjacent tissues, resulting in symptoms of subclavian pain in the right upper chest. 3. Chest diseases: such as tuberculous pleurisy, which is extremely painful and invades the tissues above the right chest, which can lead to the symptom of right supraclavicular pain; tuberculosis involving the tissues above the right supraclavicular area, which can also lead to the symptom of localized pain. In addition, intercostal neuritis can also lead to symptoms of right upper chest subclavian pain, especially when the patient coughs violently or takes a deep breath. It is recommended to go to the hospital as soon as possible to clarify the cause of the discomfort and treat the symptoms.