Entering a crowded and noisy room where the air is not circulating may cause panic attacks due to hypoxia, coronary heart disease and arrhythmia. 1. Lack of oxygen: It is considered to be a long time in the closed space air circulation or in the air pressure is low in the environment, resulting in the phenomenon of panic. 2. Coronary heart disease: due to enter the crowded and noisy air circulation indoor, may cause myocardial hypoxia, will lead to panic, chest tightness and shortness of breath phenomenon. 3. Arrhythmia: Because the patient enters the crowded and noisy room with poor air circulation, it may cause the heart’s rhythm to change, which will produce the feeling of panic. If there are symptoms of heart discomfort, you need to go to the hospital as soon as possible, by the doctor according to the specific conditions, to develop individualized diagnosis and treatment plan, so as not to delay the condition.