Followed by influenza and parainfluenza virus, adenovirus, coronavirus, coxsackie virus and mucus and paramyxovirus. The main mode of virus transmission is inhalation through respiratory tract, and then it enters the body through contaminated body or food.
Susceptibility comes from the frequent stimulation of antigen substances, but its susceptibility depends on the number of mast cells and basophils in nasal mucosa and the ability to release chemical mediators.
It has been proved that the number of these cells in nasal mucosa of patients with allergic rhinitis is not only higher than that of normal people, but also has a strong ability to release chemical mediators.
The characteristic of nasal congestion is intermittent. During the day, when it is hot, working or exercising, the nasal congestion is relieved, and at night, when it is still or cold, the nasal congestion is aggravated.
Another feature of nasal congestion is alternation. For example, when lying on your side, the lower nasal cavity is blocked and the upper nasal cavity is well ventilated. Due to stuffy nose, I sometimes have symptoms such as decreased sense of smell, headache, dizziness and stuffy nose.