A series of painful symptoms such as back pain, chest pain, and back pain may occur after a bout of gas. The bout will often appear a short period of breathing difficulty, but also likely to appear severe pain. From the medical point of view, this belongs to the local muscle soft tissue sprain, due to the sudden force or change of posture caused by, soft tissue edema, to be treated in a timely manner. There are also some patients who may appear pale, sudden fainting, panic and shortness of breath after braking, and patients had better go to the hospital for some detailed examination.