A runny nose can be caused by rhinitis or it can be caused by something else. Usually, there are more reasons for the nose to be out of breath. In the case of acute rhinitis, usually accompanied by upper respiratory tract infections, the patient shows symptoms of nasal congestion and runny nose. If it is chronic simple rhinitis, it is mostly characterized by alternating symptoms of nasal congestion, while chronic hypertrophic rhinitis is characterized by persistent nasal congestion, and these two types of chronic rhinitis can also be accompanied by nasal discharge, headache and dizziness. If it is caused by allergic rhinitis, the symptoms of sneezing, itchy nose, nasal congestion and itching in the inner corners of the eyes are predominant. In addition, the causes of nasal dyspnea include sinusitis, nasal polyps, deviated nasal septum, nasal tumor lesions, nasal foreign bodies, etc. Patients are advised to go to the ENT department of the hospital in order to clarify the cause of the disease. If rhinitis is caused by the nose, usually to ensure nasal hygiene, go out or work as much as possible to wear a mask, to avoid external stimuli, so as to avoid aggravation and recurrence phenomenon. If it is caused by other diseases, it is recommended to take medication under the guidance of the doctor, and if necessary, surgery.