CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Tuberculoid leprosy discolouration on a man's chin. This chronic skin disease is caused by an infection of the Mycobacterium leprae bacterium. The tuberculoid form is benign and self-limiting, resulting in patches of skin discolouration and localized numbness due to nerve damage. Leprosy is treated with a combination of antibacterial drugs, to avoid drug-resistant strains developing.
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