Persistent erosions of the glans penis and foreskin

Beijing University of Chinese Medicine, Beijing, China; Department of Dermatology, China-Japan Friendship Hospital, Beijing, China

Department of Dermatology, Peking Union Medical College Hospital, Beijing, China; State Key Laboratory of Complex, Severe, and Rare Diseases, Beijing, China; Clinical Professor, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China