Viral cough usually refers to cough caused by viral infections, such as influenza, viral flu, viral pneumonia, etc., often with cough with sputum symptoms. 1. Influenza: If the influenza is caused by influenza A or B virus infection, the patient will have a cough with sputum, and the cough will last for 4~7 days. In addition, the patient will be accompanied by headache, chills, high fever, muscle and joint pain, nasal congestion, sore throat and other manifestations. 2. Viral colds: In addition to coughing, patients with coughs caused by viral colds will also have symptoms such as dry throat, nasal congestion, runny nose, headache and breathlessness. 3. Viral pneumonia: If the cough is caused by viral pneumonia, the patient will not only cough, but also cough up white mucus sputum, fever, fatigue, drowsiness, dyspnea and other symptoms. It is recommended that the patient needs to consult a doctor in time for the cough, and the doctor will treat the cough after clarifying the cause of the disease.