My pediatrician says my child may have mucocutaneous leishmaniasis, but I don't understand. What does it mean?

Parasitic infection. Leishmaniasis = parasitic infection transmitted by bite of infected sand flies. In mucocutaneous forms it may start with skin sores which can develop into ulcers with inflamed lymph nodes. Inadequately treated or untreated it can lead to nose & throat lesions with congestion & nose bleeds. It can eventually destroy tissue of the nose or throat. Sometimes skin & mucosal lesions are simultaneous.
Parasitic infection. Leishmaniasis is caused by a protozoan parasite and mucocutaneous leishmaniasis can cause destruction of affected tissues. A biopsy may be needed to establish the diagnosis.