Rhinitis can easily appear in the following two seasons: 1. during spring and summer, when the air is filled with a large number of allergens and patients can easily develop allergic rhinitis such as sneezing and itchy nose after inhalation; the air is also more humid and it is easy for viruses and bacteria to multiply, which can also easily induce patients to develop acute rhinitis and other related symptoms. 2. during autumn and winter, when the temperature The air is drier and the humidity in the air is lower, which can easily induce patients to develop chronic rhinitis such as dry rhinitis. As the flowers and trees are dying, it is also easy to induce patients to develop allergic rhinitis. In short, rhinitis is more likely to occur in the spring and summer and autumn and winter, and some patients who have perennial allergic rhinitis are present in every season.