1, first of all, for some elderly patients, patients with diabetes, coronary heart disease and other underlying diseases must pay attention, many pneumonia, urinary tract infection symptoms are not typical, easily mistaken for a cold, so such patients better go to a regular hospital to see a doctor. You can not just take medicine, many cold medicine may cause hypertension, coronary heart disease aggravation. 2, when there are typical cold symptoms, such as fever, fear of cold, nasal congestion, runny nose, cough, etc., be sure to pay attention to the presence of chest tightness and shortness of breath and panic, if there are these symptoms, there may be complications such as myocarditis, which can be life-threatening in serious cases. Take day and night Benadryl or other drugs containing the same ingredients under the guidance of a doctor. 3, the most common cold is divided into wind-heat, wind-cold and deficiency people cold, to identify the evidence of the use of drugs to do, if wind-cold patients use antiviral oral solution and other cold drugs, the symptoms may be aggravated, so must not take drugs indiscriminately by themselves, must consult a doctor. 4, there are many other infectious diseases early symptoms are very similar to the cold, such as tonsil suppuration, pneumonia, dengue fever, epidemic hemorrhagic fever, scrub typhus, etc., if the disease persists or aggravated, to timely hospital consultation. 5, if a cold should be sure to rest more, never run exercise or physical labor, not only can not enhance the immune system, will only aggravate the disease, drink more water, eat more fruits and other nutritious food. 6, once the condition persists or worsens, be sure to seek timely medical attention!