Seasonal onset of patients Every year, spring and autumn are the high incidence periods for allergic rhinitis. The unpredictable climate, relatively high concentration of allergens in the environment (e.g. pollen, tree chips, spike chips, etc.) and weak immunity are the main factors for the onset of the disease. Easy to confuse with cold Due to the lack of knowledge of the disease, some patients obviously have allergic rhinitis, but they come to the hospital only after they have been treated according to the cold, and finally do not get well. It is easy to distinguish between cold and allergic rhinitis. 1, the cold is usually accompanied by systemic symptoms, such as fatigue, fever, weakness, generalized pain, etc., while allergic rhinitis is simply a nasal problem, basically no systemic symptoms; 2, allergic rhinitis usually lasts for several months, while the cold usually heals itself in 1-2 weeks; 3, most of the allergic rhinitis has a very obvious seasonality, especially in spring and autumn, while the cold can occur throughout the year. 4. Through blood tests, most of the allergic rhinitis shows increased eosinophil values in the blood analysis, while other values are generally normal. The disease is prone to complications for a long time Allergic rhinitis should be treated promptly to reduce complications. Common complications include sinusitis (headache, yellow nasal discharge and increased nasal congestion in addition to sneezing, runny nose, nasal itching and nasal blockage), nasal polyps (swelling in the nasal cavity, increased nasal blockage or even complete blockage), allergic pharyngitis and asthma (itchy, dry, painful throat with chronic cough, chest tightness, shortness of breath, throat tinnitus and expiratory dyspnea), nasal bleeding Allergic otitis media (tinnitus, stuffy ears, abnormal hearing, watery feeling in the ears, etc.), eczema of the external ear canal (itching and yellow water in the external ear, etc.), allergic conjunctivitis (itching and tearing of the eyes, etc.), etc. Although it is a little difficult to prevent allergic rhinitis, it is best for patients with seasonal allergic rhinitis to find their own patterns and take some anti-allergy medication when the rhinitis is expected to flare up. Usually around March-May and August-October each year is the peak of seasonal allergic rhinitis, you can take anti-allergy medication two weeks before the expected onset of the attack to have a certain effect of preventing or reducing the intensity of the attack.