Cutaneous leishmaniasis. View of a cutaneous leishmaniasis scar on the face of a girl. This tropical disease is caused by Leishmania sp., a parasitic protozoan which is transmitted by bites from infected sand-flies. This is the less serious form of the disease, where a persistent ulcer develops around the sand-fly bite. While the ulcer eventually heals, scars (as here) are common. Drug treatment is effective. Photographed in Iran.
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