There were 62 positive allergen in inhalant group in the 180 urticaria patients tested and positive ratio was 34 44%. Common inhalant allergens were powder dust,housedust acarus and cockroach.

• 180例病人中 ；吸入组检出阳性 62例 ；阳性率 34 .；4 4%25；常见的吸入过敏原为粉尘螨、屋尘螨、蟑螂 ;