1978-1980 : Premedical Course, College of Natural Science, Seoul National University.
1980-1984 : College of Medicine, Seoul National University. B.S. & M.D.
1884-1986 : Military service in Korean Army (Chong-Pyong National Army Hospital)
1986-1991: Internship & Dermatology Residency, Seoul National University Hospital,
1991 : National Boards on Dermatology
1991. 2. : Master of Science degree at Seoul National University, (M.Sc.)
1991-2003 : Professor and Chairman, Department of Dermatology, College of Medicine, Gyeongsang National University
1995. 8. : Doctoral Degree at Seoul National University College of Medicine (Ph.D.)
1996. 8. 1. - 1998. 7. 31: Postdoctoral fellowship on photoimmunology & photocarcinogenesis funded
by the R.E. Bob Smith Research Foundation at the Department of Immunology, The Univ. of Texas MD Anderson Cancer
Center, Houston, Texas, U.S.A. under the direction of Margaret L. Kripke, Ph.D.
2003. 2. - present : Director in Chief. White-Line Skin Clinic, Changwon, Kyungnam, Korea.
Korean Medical Association
Korean Dermatological Association
Korean Society of Photoscience
Korean Society of Investigative Dermatology
Korean Society of Photomedicine: Council member
American Academy of Dermatology
American Society for Photobiology
European Society for Photobiology
International Society of Dermatologic Surgery
American Society for Dermatologic Surgery
Society for Investigative Dermatology
Korean Society for Immunologist
Korean Society for Vitiligo: president (2016.5 - 2018.4)