Allergic rhinitis If only seasonal episodes are present annually, the usual reason is due to pollen, wickets, etc. At this time, the rhinitis is called seasonal allergic rhintis, and it is called "pollen" or "Hayfever" (HAYFEVER) More related to the seasonal outdoor environment.
Long-term allergic rhintis refers to there is no significant seasonal difference in the pathogenesis, and its allergic factors include: dust mites, mold, cold air, fog, distals, smoke, perfume, food and other chemicals, etc. More related to the indoor environment.
A variety of factors that cause allergic rhinitis such as pollen, catkins, dust mite, mold, etc., allergens, allergens can be divided into inhalant and food sexual allergens, they produce some chemical substance by stimulating the body, thus Causes the corresponding allergic symptoms.
