[The analysis of the allergens in 576 patients with allergic rhinitis in Qingyang of Gansu Province].

Objective: To investigate the allergens distribution of 576 allergic rhinitis patients in Qingyang, and to provide basic epidemiologic information for the prevention and treatment of allergic rhinitis.
Method: Skin prick test was done to all the 576 patients with allergic rhinitis with 28 kinds of allergens.
Result: Four hundred and eighty cases (83.3%) showed positive reaction to at least one allergen of 28 allergens. The most common allergens were Magwort (73.3%), Giant Ragweed (55.0%) Tree II (51.7%), Tree I (48.3%) Dermatophagoides farinae (43.3%) and Dermatophagoides pteronyssinus (36.7%). Moreover. the positivity decreased with age. There was no difference between male and female.
Conclusion: The study shows that Magwort. Giant ragweed and tree II are the most important allergens on Qingyang district.