Abstract: Objective To explore whether the Kang Kefei and Tian Runmei's diagnostic criteria (K-T criteria) is suitable for atopic dermatitis(AD). Methods 917 AD patients, whose diagnosis had been made with the Hanifin and Rajka criteria (H-R criteria) previously, were redignosed by K-T criteria. Their atopic history, and clinical fealures were analysed, too. Results 888 out of 917 patients(96.84%) were consistent with K-T criteria.763 patients (83.21%) had personal or family atopic history. The frequency of facial dermatitis was higher in infantile AD group than that in childhood AD group, adolescence AD group, and adult group. Whereas,the frequency of xerosis,ichthyosis,keratosis pilaris and orbital darkening was lower in infantile AD group than those in other groups. Conclusion Atopic history is an important factor in the diagnosisof AD. K-T criteria is practical and of value in the diagnosis of AD.

Key words: Dermatitis,atopic, Atopic history, Diagnostic criteria