There are several causes of pain in the upper chest: 1. Trauma. You should consider whether you have suffered a traumatic injury that causes pain in the upper part of the chest. 2. intercostal neuralgia. Most of them are pain on one side, but there are also pain on both sides at the same time, and the pain increases when coughing and sneezing. 3. muscle spasm. The pain will be aggravated when breathing. 4. Pleurisy. Most of them are caused by inflammation, which can lead to chest pain, aggravated by coughing. 5, heart disease. For example, angina pectoris, myocarditis, coronary artery disease, etc. will also appear pain in the upper chest. 6, breast disease. For example, breast enlargement can also show pain in the upper part of the chest. It is recommended that patients combine their other discomfort symptoms and go to the hospital for a comprehensive examination to find out the cause of the disease and treat it.