The serum IgE

T cell phenotypes

skin prick testing for allergens

lung function and X-rays in 38 patients with CVA was measured.The results showed that there was increased serum IgE level

CD4/CD8 counts.Many patients with CVA have midld lesion of humg function.The positive rates of Adrenaline bronchodilating test was 50%.Compared with control group there was significant statistical

frence(P<0.005).It indicated that all above- mentioned tests help the diagnosis oof CVA.It is recommened that Bronchodilator should be first considered for patients with CVA

at the same time use topically inhaled corticosteroids and immuno-desensitization to avoid recurrence