Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cutaneous mastocytosis ?
    ### Response:
    Cutaneous mastocytosis is a form of mastocytosis that primarily affects the skin. There are three main forms of the condition: maculopapular cutaneous mastocytosis (also called urticaria pigmentosa), solitary cutaneous mastocytoma, and diffuse cutaneous mastocytosis.
    