Objectives : This study was performed to find out the characteristics of outpatients and diseases in dermatology of Korean medicine and compare to previous studies.Methods : We reviewed the medical records of total 3,041 outpatients in dermatology of Korean medicine at Kyung Hee Korean medicine hospital from January 1, 2011 to December 31, 2015. We found out demographic characteristics of outpatients and observed the diseases in order of frequency by age and sex. Then, we compared these results to previous studies performed at same hospital in 2000 and 2007.Results and Conclusions : 1. Among the total 3,041 outpatients in 2011-2015, male patients were 1,184(38.87%) and female patients were 1,857(61.07%). 2. There were 203(6.68%) patients in 0-10 years old, 455(14.96%) patients in 11-20, 918(30.19%) patients in 21-30, 582(19.14%) patients in 31-40, 359(11.81%) patients in 41-50, 265(8.71%) patients in 51-60, and 259(8.52%) patients in more than 61 years old. 3. The common diseases in 2011-2015 were seborrheic dermatitis(17.33%), eczema(13.32%), urticaria(12.89%), atopic dermatitis(12.36%), pruritus(9.90%), acne(8.85%), and alopecia(6.08%). 4. The most common diseases by age groups were atopic dermatitis(0-10, 11-20 years old), seborrheic dermatitis(21-30, 31-40, 41-50 years old), urticaria(51-60 years old), and pruritus(more than 61 years old). 5. The common diseases in male patients were seborrheic dermatitis(20.69%), atopic dermatitis(15.46%), and urticaria(12.25%) and female patients were seborrheic dermatitis(15.19%), eczema(15.13%), and urticaria(13.30%). 6. The most increasing disease in the distribution between 2004-2006 and 2011-2015 is rosacea(+462.93%), and the most decreasing disease is vitiligo(-72.05%).