Leprosy disease is usually provoked by the bacteria named Mycobacterium leprae. It damages the body’s surface as well as the peripheral nervous system. The nerves in extremities are the target. Leprosy progresses smoothly. It may take up to 40 (!) years to release its full potential. The skin lesions become rather disfiguring. Usually, a person-to-person contact is the main channel of expansion.
It takes a while for Mycobacterium leprae to reproduce inside the organism. It develops inside the cells. As a rule, it needs at least two weeks to progress. Other bacteria grow within several minutes or maximum hours. The most comfortable temperature for Mycobacterium leprae is 80.9 F-86 F. That is why it prefers chilly body organs and zones like nose, eyes, and extremities, especially feet and arms.