<prompt> Delhi boil refers to:Solar KeratosisMalignant pustuleL. tropica soreVenereal ulcer  <response>: Cutaneous leishmaniasis is the most common form of leishmaniasis affecting humans. It is a skin infection caused by a single-celled parasite that is transmitted by the bite of a phlebotomine sandfly. This disease is considered to be a zoonosis an infectious disease that is naturally transmissible from animals to humans, with the exception of Leishmania tropica. Other names are Oriental sore, Tropical sore, Chiclero ulcer, Chicleros ulcer, Aleppo boil, Delhi Boil or Desert boil.Ref : 