For the malady found in the Hebrew Bible, see the article
Tzaraath. For the album by the band
Death, see
Leprosy (album). Leprosy, or Hansen's disease, is a
chronic infectious disease caused by the
bacterium Mycobacterium leprae. Leprosy is primarily a
granulomatous disease of the
peripheral nerves and
mucosa of the
upper respiratory tract; skin lesions are the primary external symptom. Left untreated, leprosy can be progressive, causing permanent damage to the skin, nerves, limbs, and eyes. Contrary to popular conception, leprosy does not cause body parts to simply fall off, and it differs from
tzaraath, the malady described in the Hebrew scriptures and previously translated into English as leprosy.
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