The human respiratory tract starts from the nostrils and goes through the nasal cavity, pharynx, larynx, main trachea and bronchi to the alveoli, with some “side channels” leading to other places on the way. For example, there are thin tubes in the nasal cavity connected to the sinuses, a group of four closed cavities in the surrounding facial bones; in the pharynx, there is the eustachian tube leading to the middle ear. At the beginning of the cold, the virus is mainly in the nasal cavity and throat (i.e. upper respiratory tract). If the virus attacks the sinuses, it can cause sinusitis, with headache, nasal congestion, increased yellow mucous nasal discharge, and pressure pain on the face or above the eyebrows on both sides of the nose; if it attacks the middle ear, it can cause different types of otitis media, with blocked ears, stuffy ears, ear pain, and hearing loss, and in the case of acute purulent otitis media, severe pain and pus in the ear with fever; if it attacks the throat, it can cause laryngitis, with The main manifestation is cough, sputum and even chest pain. The culprit of the common cold is rhinovirus. The rhinovirus is prone to mutation, and there are always new types, so it is easy to repeat the infection. Thus, it seems that a “small disease” such as a cold should not be underestimated, and should be medicated promptly from the beginning of the cold symptoms. So, how to use the medicine at the beginning of the cold? At present, there is no special medicine that can eliminate the cold virus. Some people just got a cold this “vegetarian” that “pill” to eat a whole bunch, which is not necessary. Because the common cold is a self-limiting disease, that is, in the body under normal circumstances rely on their own immunity to limit the development of the disease, so in the early stages of the disease can be some comprehensive cold medicine, to help eliminate symptoms. Like compound aspirin to antipyretic, analgesic for the longest time, Conde contains antipyretic analgesic paracetamol and cough methaphan and other ingredients, and Contax contains paracetamol, phenylpropanolamine, etc., not only can reduce nasal mucous membrane congestion, so that nasal congestion, runny nose quickly reduce, and its sedative effect is conducive to sleep. If the nose is blocked too much, you can also use 1% ephedrine solution nasal drops. As long as you take the medicine, drink water regularly and rest more, you will get better in a week or so. If these measures are taken, but the onset of the disease does not improve in about 10 days, but there are the aforementioned manifestations of comorbidities, it is necessary to see the doctor in time, the application of antibiotics. For the elderly or infants who have chronic illnesses, we need to take care of them more carefully and use appropriate antibiotics when they have been sick for 2-3 days. Since colds cause us a lot of trouble, are there any preventive measures? In fact, the medical profession has tried many ways to prevent colds. Such as vaccination, oral vitamins, ultraviolet disinfection, etc., but none of them has any definite effect. Since many viruses, especially rhinovirus, are transmitted through contact with contaminated fingers, careful hand washing is beneficial both in the home and for people who frequent public places. Speaking of which, you may ask, “What is the flu, but what about the common cold? Influenza is commonly known as “heavy cold”, it is the same as the common cold is an acute viral respiratory disease, but the virus that causes the onset of the disease is different; the onset of the season is mostly in winter, often a large area, large population outbreaks; early onset of the patient will have a high fever of 39 degrees, headache, body pain and other symptoms than the common cold much heavier, complications also come quickly. Therefore, if you find that you may have the flu, you should go to the hospital as soon as possible and ask your doctor for guidance to solve the problem.