The pain is often aggravated at night and is accompanied by significant pressure pain on the anterior side of the sternum, and in the acute stage, it can also be accompanied by redness, swelling and heat of the skin. 2. Some patients, for fear of aggravating the pain, will show a reduced respiratory rate and dare not cough hard. 3. Because the pain is derived from sterile inflammation, for this pain, topical Fotarim ointment can be used in clinical practice, and oral non-steroidal drugs, such as ibuprofen, Cilazol, and Lugac, etc. If the pain can be rapidly relieved, it is proved to be a sterile inflammatory reaction.