Inhaled cold air heart fossa on the difficult may be caused by coronary heart disease, pleurisy, costochondritis and other reasons, the specific causes still need to go to the hospital to determine the examination. 1. Coronary heart disease: coronary heart disease is generally caused by heredity, long-term smoking, obesity, unhealthy diet and other reasons, when the patient inhales cold air, it is easy to make the coronary artery spasm, which will lead to the patient’s heart fossa difficult, the patient will also appear shortness of breath, cold sweat, dizziness and other symptoms. 2. Pleurisy: pleurisy is usually caused by pleural trauma, viral infection, etc. When inhaling cold air, the patient’s lungs and airways are easily stimulated, pulling the pleura, which will lead to the symptom of heart and mouth fossa, and the patient will also have symptoms such as chest tightness, coughing, chest pain, etc. When the condition is serious, the patient will also have difficulty in breathing. 3. costochondritis: costochondritis is generally caused by viral infection, chronic strain and other reasons, when the patient inhales cold air, it will stimulate the trachea, so that the spasm of the trachea, so that the symptoms, the patient will also have a rise in body temperature, lesions of the skin red and swollen, cough and other symptoms. There are many reasons for inhaling cold air, such as the symptoms are not obvious can be observed for a period of time, if also accompanied by other symptoms, should be timely to the hospital for medical treatment, diagnosis and treatment in accordance with the doctor’s instructions.