Effect of the modified painless blistering moxibustion with wheat-grain sized moxa cone on cough variant asthma of pathogenic wind attacking the lung: a randomized controlled trial.

To observe the clinical effect of the modified painless blistering moxibustion with wheat-grain sized moxa cone on cough variant asthma (CVA) differentiated as pathogenic wind attacking the lung and explore the influences on eosinophil count (EOS) in the peripheral blood and the content of interleukin-4 (IL-4) and tumor necrosis factor-α (TNF-α) in the serum of patients.