Dr. Pa-Fan Hsiao, MD, MMS, is a senior attending physician in the Department of Dermatology at MacKay Memorial Hospital, and associate professor of MacKay Medical College and MacKay Junior College of Medicine, Nursing and Management. Her main field of interest is focused on immunodermatology, especially chronic urticaria, atopic dermatitis and psoriasis. Her research focuses on dermatopathology, transdermal drug delivery and skin inflammation.