Leishmania major

Leishmania major is a microscopic parasite that causes a disease called cutaneous leishmaniasis, primarily transmitted through the bites of infected sandflies. Once inside the human skin, the parasite infects immune cells, leading to skin sores or ulcers that can be slow to heal. It is common in parts of Africa, the Middle East, and Central Asia. The infection is not contagious from person to person but can be controlled with proper treatment. Symptoms usually include one or more skin ulcers, and early diagnosis and treatment can help prevent complications and scarring.