Yes, leprosy can be dangerous. I read that as leprosy progresses toward its advanced stage, the swellings that initially develop discharge pus, the hair may fall from one’s head and eyebrows, nails may loosen, decay, and fall off. Then the victim’s fingers, limbs, nose, or eyes may be slowly eaten away. Finally, in the most serious cases, death ensues.
Is that suppose to be a funny? FYI leprosy, as known as Hansen's Disease is easily treatable nowadays.
Leprosy is extremely difficult to contract (it was once in the Guinness Book of Records as the least contagious disease), and caught early, extremely easy to treat.
You are more likely to be kicked to death by a wild donkey called Gerald from Lithuania, than suffer ill effects from leprosy.