This season the weather said cold, accidentally got a cold. Fortunately, the illness is not serious, take some cold medicine, rest a few days, the cold is well. However, for some friends, a cold is often followed by a nasty cough. This cough is said to be annoying because it is always a dry cough, and once you smell the fumes or something, your throat will itch and you will cough all the time. Especially at night, the cough is even stronger, not to mention that you can’t sleep well, the family is also affected. I used a lot of antibacterial agents like cephalosporin, but they didn’t work. It was really a cough that came after I got over the cold. So what is this cough all about? It turns out that the cough that occurs after a cold is called post-infection cough in medical science. It is not quite the same as the cough we usually get from a cold or pneumonia. First of all, it occurs at a different time. As the name implies, post-infection cough occurs after a single infection, and it often occurs after a respiratory infection, when all other symptoms have cleared up but the cough does not. For example, in a patient with influenza, the fever has gone down and the body has strength, but the cough is always bad. Second, the nature of this cough is different. This cough is basically a dry cough with very little sputum. At the same time, the respiratory tract becomes very sensitive at this time, and when it smells an irritating odor, it coughs incessantly, sometimes suddenly, and often worsens at night. Thirdly, the cough lasts for a long time, often up to 3 weeks or even up to 8 weeks. The fourth is that it is treated differently. For such a cough, first go to the hospital to do some tests to rule out some other diseases that cause coughing, such as bronchial asthma, lung tumors, tuberculosis and other diseases. Then the doctor will prescribe some anti-allergy medications and central cough suppressants to relieve the symptoms, and the use of antibacterial agents is generally not recommended. Finally, you may be asking, can such a nasty cough be cured by such simple medicine? Let me tell you that the vast majority of coughs will clear up after an infection. Because this disease is supposed to be self-limiting, which means that most patients will get better on their own, simple anti-allergy medications and cough suppressants are sufficient. Of course, it is also important to avoid eating chili peppers and contact with paints and other things during this period to minimize irritation of the respiratory organs.