RNA - The disease, which is known as Leishmaniasis, is spreading fast due to poor hygiene conditions and pollution.
Leishmaniasis, which causes large open wounds which eat away flesh, can be fatal if not treated with a simple course of medicine.
So far, more than 100,000 cases have been reported, according to British media reports.
People living in the Syrian city of Raqqa are facing the highest risks of contracting the disease.
Doctors from Medecin Sans Frontiere (MSF) have tried to cure the disease but they left when the terror group seized the north-eastern city.
Leishmaniasis is a disease caused by parasites and spread by the bite of certain types of sandflies.
The disease is prevalent in poor countries where citizens face malnutrition, deforestation and urbanization.
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