General information 1. Definition定义 Allergic rhinitis can be defined as a disease giving rise to two or three of the following symptoms: sneezing attacks serous hypersecretion(高分泌)and nasal blockage due to a swollen nasal mucosa 2 Morbidity(发病率)10%-40%General information 1. Definition定义 Allergic rhinitis can be defined as a disease giving rise to two or three of the following symptoms: sneezing attacks serous hypersecretion（高分泌） and nasal blockage due to a swollen nasal mucosa. 2.Morbidity （发病率） 10%-40%