Clinical application of skin-prick test in chronic urticaria allergen detection

Objective To investigate the common allergens of patients with chronic urticariai and evaluate the value of skin prick test in the diagnosis of chronic urticaria pathogen.Methods 950 cases of chronic urticaria patients were detected with 30 kinds of allergens(provided by Beijing Union Company) in the skin prick((skin prick test,SPT) experiments of international standard method,including 16 inhaled allergens and14 food allergens.Positive and negative controls were established,of which the positive control was taken as the criterion.Results Of the 950 cases of chronic urticaria patients,630 cases were positive,and the positive rate was 66.3%.The positive rates of inhalation group and food group were 54.2% and 34.2%.In the inhalation group,dust mites,cockroaches,Artemisia pollen, cotton,dog hair and cigarette were on the top.The top factors were shrimp,crab,peppers,octopus,orange and mango.The inhalation allergens were more associated with chronic urticaria than that of ingestion allergens.Conclusion allergen skin prick test is safe,reliable and easy to operate,and provides an objective basis for possible allergens,and plays an important role for the prevention,treatment and nursing care of chronic urticaria.