Objective and Methods : To study the prevalence and patterns of common dermatoses and compare these to previous reports, we reviewed 128 new outpatients who visited Allergy/Derma-cosmetic Clinic at Kyung Hee Neo Medical Center in Gang-Dong area of Seoul from January to June, 2007. Results : The results of this study are summarized as follows : 1. Among the 128 outpatients, the total number of male patients were 40(31.2%) and female patients were 88(68.8%). 2. In the age distribution, the most frequently visited age groups were 10-19 years old and 20-29 years old(each 21.1%). 3. The most common dermatoses were atopic dermatitis(27.3%), acne(14.1%), allergic contact dermatitis(11.7%), other eczemas(7.8%) and seborrheic dermatitis(7.0%). 4. Among atopic dermatitis patients, the most populated age groups were 0-9 years old and 10-19 years old(each 37.1%), these results are different from past studies revealing that 0-9 years old patients are dominant. 5. Among acne patients, the most frequent age groups were 20-29 years old(50%) and 30-39 years old(27.8%), these results are different from past studies revealing that 20-29 years old and 10-19 years old patients are dominant. 6. Among Allergic contact dermatitis patients, each age group showed no difference of population. And Allergic contact dermatitis patients visited outpatients department at early stage. Conclusion : This study shows that Oriental medicine is popular especially in atopic dermatitis, acne and allergic contact dermatitis. We should investigate long-period and multi-centered study in order to know prevalence tendency of dermatoses in Oriental Medicine. And it is nessessary to research using more efficient evaluation method and treatment for these special diseases.