There are still more types of perennial coughs, which can be seen in: a. The condition of pharyngitis, which may lead to coughing symptoms, but the cough is often less heavy, an irritating dry cough, without sputum or with less sputum and more viscous, and requires treatment with drugs for upper respiratory tract infections, such as Pudilan anti-inflammatory oral solution. Chronic bronchitis, bronchiectasis, chronic obstructive pulmonary disease, interstitial pneumonia, etc. can be diagnosed by chest CT, and further anti-infective, phlegm-suppressing and cough-suppressing treatments should be directed according to the results of chest CT and other related examinations. To relieve the symptoms of cough. Fourth, tuberculosis may also occur, often accompanied by a low fever in the afternoon, and sometimes coughing up sputum and blood.