Mastocytosis, Cutaneous, also known as urticaria pigmentosa, is related to extracutaneous mastocytoma and sm-ahnmd, and has symptoms including exanthema, pruritus and macule. An important gene associated with Mastocytosis, Cutaneous is KIT (KIT Proto-Oncogene, Receptor Tyrosine Kinase), and among its related pathways/superpathways are Infectious disease and Innate Immune System. The drugs Imatinib Mesylate and Omalizumab have been mentioned in the context of this disorder. Affiliated tissues include skin and spleen, and related phenotypes are generalized abnormality of skin and pruritus