Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Leishmaniasis ?
    ### Response:
    Leishmaniasis is a parasitic disease spread by the bite of infected sand flies. There are several different forms of leishmaniasis. The most common are cutaneous and visceral. The cutaneous type causes skin sores. The visceral type affects internal organs such as the spleen, liver, and bone marrow.
    