Pain in the right side of the chest: First, if there is a history of trauma, it may be caused by soft tissue contusion after trauma, which can lead to rib fracture in serious cases. Second, it may be caused by pleurisy or pleural adhesions, which usually come on through deep breathing, and generally do not occur if you do not breathe, when the thoracic spine or abdomen is active. Third, costal chondritis, costal chondritis is a kind of aseptic inflammation of the rib cartilage, often does not show local swelling, but local pressure pain is more obvious. Fourth, there may be acute cholecystitis induced by the right side of the chest, which sometimes affects the nerve pulling pain in the back. Fourthly, if it appears in the right side of the chest in front of the chest, near the sternum, it is also necessary to exclude the possibility of having angina pectoris or myocardial infarction. If it is accompanied by palpitations and chest tightness, you must be highly suspicious and go to the hospital immediately for an electrocardiogram and troponin examination to rule out any heart attack or angina pectoris.