Pityriasis Rosea, also known as pityriasis circinata, is related to exanthem and syphilis. An important gene associated with Pityriasis Rosea is CX3CL1 (C-X3-C Motif Chemokine Ligand 1), and among its related pathways/superpathways are Innate Immune System and Class I MHC mediated antigen processing and presentation. The drugs Tacrolimus and Petrolatum have been mentioned in the context of this disorder. Affiliated tissues include skin and t cells, and related phenotypes are Increased shRNA abundance (Z-score > 2) and Increased shRNA abundance