There are many reasons for chest pain in twenty-two year old patients: if the patient is thin and tall, it can be seen in spontaneous pneumothorax or with pulmonary herpes, especially during the school period when life is more stressful, which can also easily lead to the occurrence of the disease, as well as previous lung tissue infections that can be easily induced and require surgical drainage if necessary; there are also some patients who are caused by breast enlargement, especially In some patients, the cause is related to the change of hormone level, and the pain of mastopexy is regular, especially in the premenstrual period; in young women, more chest pain is caused by costochondritis, which is a self-limiting disease caused by localized sterile inflammation of the ribs.