Your son's complaint is rather common at his age. His chest pain has nothing to do with his heart or his lungs. His chest pain is due to a condition called the Da Costa syndrome or spasm of the internal mammary artery. This is an artery on the inside of his chest wall. No problem will result from the occasional spasm of this artery. The pain is always caused by stress. You need to speak to your son and to find out what is causing him so much stress at present. It is usually something at school that is causing this complaint such as being bullied. If necessary he may need to see a child psychologist.
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