Leprosy is a chronic infectious disease caused by infection of the leprosy bacillus, which is now under better control in our country, and is rarely encountered in the clinic. Its incubation period is generally 2-5 years, the shorter several months, the longer often 10 years, its clinical manifestations are mainly manifested as skin damage and damage to peripheral nerves, often with joint pain and muscle pain, limbs feel abnormal obstacles such as the precursor symptoms, strong immunity is generally like tuberculosis leprosy end of the development of the immune system is relatively low to the development of tuberculous end of the development of the immune system is relatively low. If you suspect this disease need to go to the regular hospital infectious disease department or infectious disease hospital for examination, clear diagnosis after targeted treatment, and then pay attention to isolation to avoid infecting others.