Frequent cough and cough bleeding are very common clinical symptoms when catching a cold. It is mainly because bacteria and viruses invade the respiratory tract mucosa when catching a cold, which destroys the integrity of the respiratory tract mucosa and breaks the submucosal capillaries, leading to a small amount of bleeding. It can also cause lung infection and lobar pneumonia due to the downward spread of bacteria or viruses. At this time, patients mostly cough rust colored sputum or blood in sputum. If a cold causes an acute attack of other diseases, they can have more blood, such as bronchiectasis. It is suggested that patients should go to the respiratory department of the hospital for chest CT, fiberoptic bronchoscopy, complete coagulation function, blood analysis and other examinations to further clarify the cause of hemoptysis, so as to give effective treatment. In case of small amount of bleeding, hemostasis treatment is mainly given, and in case of large amount of bleeding, interventional treatment is required.
