Title pageThe type of manuscript : CASE REPORTTitle of the manuscript: Successful treatment of pediatric type III pityriasis rubra pilaris with limited-course secukinumab injectionAuthor: YangzongDeji1, YangjiCiren1, QuzongSuolang1, ZhiliangLi21Department of Dermatology and Venereology, People’s Hospital of Xizang Autonomous Region，Lhasa, China;2Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, ChinaAcknowledgment: noneStatement: the manuscript has been read and approved by all the authors, that the requirements for authorship as stated earlier in this document have been met, and that each author believes that the manuscript represents honest work.Corresponding author: ZhiliangLi, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, China. E-mail: pyslzl@pumcderm.cams.cn telephone number:8615298384673