What are the factors that cause allergic rhinitis?

Now is the season of high incidence of allergic rhinitis. According to the survey, there are as many as 240 million allergic rhinitis patients in my country. Jin Yingyu, a resident physician and chief resident physician of the Department of Otolaryngology in a hospital of the People’s Liberation Army, introduced to @ Guoshi through train that there are four main factors that cause allergic rhinitis:

①Inhalation or ingestion of allergens, Such as airborne pollen, dust mites, animal dander, dry and cold air, food, etc;

③Allergic diseases have certain genetic predisposition. Allergic rhinitis is no exception. The heritability rates reported by different studies range from 33% to 91%; More, there is also the possibility of causing allergic rhinitis. (Zhao Bin)

Source: Guoshi through train