Autumn climate and phenology easy to induce allergic rhinitis — people.com.cn Health Channel – people.com.cn original title: autumn climate and phenology easy to induce allergic rhinitis after autumn, increase the pollen index forecast meteorological weather forecast program, attracting a lot of pollen allergy patients, among them, mostly in patients with allergic rhinitis. That day, when I was on duty, I received a phone call from a patient. Patient surnamed Chen, is a female lawyer, voice and tone are more comfortable. Ms. Chen is the first to thank our weather forecast, "pollen index" let her do have the pollen allergic patients before the trip. I also said a cliche: "this is what we should do." Then Ms. Chen told me that a few days ago went to a hospital, this is ready to look at rhinitis, but found too many patients in the consulting room. "Why are there so many patients? Rhinitis and climate is also a relationship?" Ms. Chen throws a problem. I replied, "yes, allergic rhinitis has a lot to do with the weather. A year after the beginning of autumn, the Department of ENT of the hospital admissions to a large number of rhinitis patients, about 80% of these patients are suffering from allergic rhinitis autumn pollen. Patients with complex symptoms, mainly nasal congestion, sneezing, runny nose, itchy eyes nose and large water, even cough. Severe cases of secondary infection (the course of disease will be greatly extended); a small number of patients may also be transformed into perennial rhinitis, in the case of hot or cold or stimulating odor will occur." "That’s a good idea. I didn’t expect you to be a health care professional." Ms. Chen gave me a verbal praise, but then, the question came again: "why is prone to allergic rhinitis pollen in autumn?" I told Ms. Chen, this is from the autumn climate and phenological characteristics. Because these two are my specialty, so it is very natural and easy to talk about it: "as everyone knows, the climate characteristics of autumn is be neither hot nor cold, the sky was clear, but the air is dry, the wind speed is larger. From the perspective of phenology, autumn is the season of crop maturity, but also a lot of herbaceous pollen pollination season. Dry air, greater wind speed, as well as a large number of plant pollen, including allergic rhinitis, including some allergic diseases, with the minimum conditions. In our country, the main cause of allergy rhinitis autumn plant has two kinds: one is the grass, one is the growth of ragweed wormwood is the most extensive area. From the beginning of autumn, the grass seeds with pollen spread in the air in the vicinity, with suitable weather conditions, it is easy to move pollen fly. In the process of migration, pollen, such as exposure to allergic constitution, it is easy to induce allergic rhinitis. In general, the pollen can be sensitized must have antigenicity, no antigenic pollen will not cause hay fever. But in recent years, the study found that due to the large amount of greenhouse gas emissions, increasing the atmospheric concentration of dust, sulfur dioxide and other harmful substances, can cause the protein structure of pollen surface variation, make originally not pollen antigen makes people produce allergic reactions. This may be one of the main reasons for the significant increase in the incidence of allergic rhinitis of pollen in recent years (especially in industrial and mining cities)." "Oh, yes, we have a lot of smelting and chemical factories in this city."