Epidemiologic Study of the Inducing Factors in Papular Urticaria

Objective To determine the possible inducing factors of papular urticaria.Method Using case control study,242 patients with papular urticaria and 242 healthy people were investigated to find out the inducing factors of papular urticaria.Result Insect sting,nasopharyngeal infection and psychologic factors were associated with papular urticaria(P<0.05).Conclusion Insect sting,nasopharyngeal infection and psychologic factors are main inducing factors in papular urticaria.