There are five main possibilities for men with chest pain: first, pleurisy, which is mostly caused by the spread of lung infection to the pleura and is characterized by limited pain in the chest, which is aggravated by deep breathing and coughing. Second, costochondritis, which is mostly a sterile inflammation of the costal cartilage, with pain distributed along the costal margin and aggravated by cold or exertion. Third, pneumothorax, manifested as stabbing pain in the chest, and progressive dyspnea may occur. Fourth, gynecomastia, one of the common diseases of male breast, manifested as male areola under the palpable enlarged breast tissue, and can be accompanied by breast swelling pain. Fifth, chest wall trauma, mostly caused by external forces acting directly or indirectly on the chest wall chest wall tissue, causing chest wall tissue congestion, edema, manifested as chest pain, and intensified during exercise. There are many causes of chest pain in boys, and when chest pain occurs, you should go to a regular hospital in time to identify the cause and actively treat it.