Cough caused by sinusitis is generally not very serious; if it is secondary to bronchitis, pneumonia and other diseases caused by coughing may be serious, should be taken seriously. 1. Less serious cases: Sinusitis clinical symptoms mainly cause nasal congestion, runny nose, decreased sense of smell, headache, etc. Due to nasal congestion will cause breathing through the mouth, causing the mucous membrane of the throat to be dry and coughing, but also due to the backflow of nasal mucus to the throat will lead to irritating cough, this cough is generally not serious. 2. More serious cases: such as bronchitis or pneumonia and other complications, caused by the cough that is relatively serious, may cause coughing, spitting, chest pain, dyspnea, fever, malaise and other symptoms, then the treatment process is more complex, the course of treatment is longer. Sinusitis cough, need to go to the hospital in time for examination, follow the doctor’s instructions for treatment.