Pfeiffer Syndrome, also known as infectious mononucleosis, is related to lymphoproliferative syndrome, x-linked, 1 and epstein-barr virus infectious disease, and has symptoms including fever and pruritus. An important gene associated with Pfeiffer Syndrome is FGFR2 (Fibroblast Growth Factor Receptor 2), and among its related pathways/superpathways are Innate Immune System and Infectious disease. The drugs Valaciclovir and Anti-Infective Agents have been mentioned in the context of this disorder. Affiliated tissues include bone and eye, and related phenotypes are ptosis and high palate