Objective:To determine the distribution characteristics of inhaled allergens and its influencing factors among allergic rhinitis (AR) patients in Chongqing. Method:Intracutaneous test was carried out in 2 474 AR patients. All the cases were divided into six groups according to age, 6-13 years old, >13-18 years old, >18-29 years old, >29-39 years old, >39-49 years old, >49 years old and four groups on the basis of season (spring, summer, autumn, winter). The correlations between the positive rates and gender, age, season were analyzed. Result:The most common allergens were dermatophagoides farin (71.26%), dermatophagoides pteronyssinus (73.61%) and polyvalent insect (60.79%). There was no significant correlation between most allergens and gender(P>0.05). Statistical analysis was conducted among different age groups, it showed that the positive rates of overwhelming majority allergens were highest in the group of 13-18 years old and higher in 6-13 years old group, and then gradually declined with age with a striking difference in each groups (P<0.05). Similar analysis was carried out among the groups in four seasons. It revealed that the prevalence rates of most allergens were higher in summer and autumn than that in spring and winter (P<0.05). Conclusion:Dermatophagoides and polyvalent insect are the most prevalent inhalant allergens in AR disease in Chongqing. Most AR patients had multiple allergens. The prevalence rates of most allergens were significantly different with age and season.
Keywords: allergens; intracutaneous test; rhinitis, allergic.
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