Pain in the bones next to the breast, mainly the sternum and rib cage, is most often caused by localized aseptic inflammation. This includes costochondritis, which occurs in the rib cage or in the area where the rib cage joins the sternum, and can be triggered by certain factors, such as exertion or trauma, and is a self-limiting disease. In case of pain, oral pain medication can be taken, and physical therapy can be used to reduce the patient’s discomfort by applying local heat packs or moderate massage, and if necessary, the painful area can be closed with lidocaine hydrochloride injection and tretinoin acetate injection. The patient’s local pain and discomfort can also be gradually improved, and attention should be paid to regular checkups.