Vague pain in the right chest can be caused by the following diseases: 1. Patients who have been smoking for years, not excluding pulmonary nodular disease or malignant tumors occurring in the lung tissue, the patient will also have cough and sputum along with the pain. Many patients think it is caused by smoking and easy to ignore, but they should have a timely chest CT examination because smoking has become an absolute risk factor for lung cancer. For patients with early diagnosis, they should choose surgery in time. 2. Due to costochondritis. It is an autoimmune disease caused by aseptic inflammation of the ribs, which can be improved by conservative treatment methods. The pain can also be relieved with the application of pain relieving drugs, oral Nimesulide dispersible tablets, and also with appropriate local heat compresses.