Without treatment, leprosy can permanently damage your skin, nerves, arms, legs, feet, and eyes.
Complications of leprosy can include:
Nerve damage can lead to a dangerous loss of feeling. A person with leprosy-related nerve damage may not feel pain when the hands, legs, or feet are cut, burned, or otherwise injured.
Blindness or glaucoma.
Disfiguration of the face (including permanent swelling, bumps, and lumps).
Erectile dysfunction and infertility in men.
Kidney failure.
Muscle weakness that leads to claw-like hands or an inability to flex the feet.
Permanent damage to the inside of the nose, which can lead to nosebleeds and a chronic, stuffy nose.
Permanent damage to the nerves outside the brain and spinal cord, including those in the arms, legs, and feet.