If it is a woman, the first thing to consider is whether there is breast hyperplasia, especially before menstruation is particularly common, if necessary, it is recommended to do breast ultrasound examination to clarify. Secondly, it is the tingling caused by intercostal neuralgia, which can not be clarified by examination, but can only be initially judged by the signs and manifestations, and then can only be considered after excluding other organic diseases. In addition, there are pleural and pulmonary lesions, such as pleurisy, spontaneous pneumothorax, and pleural irritation caused by pulmonary space invasion to the pleura. In addition to the above diseases, the most common and most important is cardiovascular problems, mostly caused by coronary artery ischemia, mainly in the elderly with atherosclerosis, there may be coronary artery plaques or stenosis of the basis of stenosis in strenuous activities or emotional stress when myocardial oxygen consumption increases, the coronary blood supply will be relatively insufficient, resulting in symptoms of stabbing pain in the chest.