IL17A and peeling skin syndrome: B cells, T follicular helper cells, regulatory T cells (Tregs), T helper 17 (Th17) cells, follicular dendritic cells, innate cells, and several cytokines, chemokines, miRNAs such as Interleukin (IL)-17, IL-6, CXCL10, CXCL13, miR-146a have been proved to participate in the development of pSS [7].