It is possible that the lack of ventilation in the nose is caused by a cold, but it may also be caused by various types of rhinitis, as follows: 1, cold: essentially acute rhinitis, mainly due to the invasive infection of the nasal mucosa by respiratory viruses, causing an acute inflammatory disease condition of the nasal mucosa, patients will appear nasal congestion, nasal itching, sneezing, flowing more watery nasal mucosa and other symptoms, may further appear chills, fever and other systemic symptoms. 2, all kinds of rhinitis: allergic rhinitis patients will also appear nasal congestion symptoms at the same time, nasal itching, sneezing, runny nose and other similar symptoms, if the appearance of chronic rhinitis, the symptoms of nasal congestion often last longer, or easy to recur, may also appear mucus, or even mucopurulent nasal secretions.