Scabies is a skin disease caused by scabies infection of the skin, and the disease spreads rapidly. The signs of scabies are intense itching of the skin (especially at night), and the rash occurs mostly in the folds of the skin, especially on the pubic area. Scabies is a disease spread by close contact. Scabies is highly contagious and is often transmitted to each other in a family or group home. Scabies can survive 2-3 days after leaving the human body, so it can also be indirectly transmitted by using the clothes, bedding, shoes and socks, hats, and pillowcases used by the patient. Sexual life is undoubtedly one of the main ways of infection. The symptoms of scabies are specifically the following: 1. intense itching, especially at night. Nocturnal paroxysmal intense itching. 2.The tunnel dug by scabies is visible in the hand slit, about 2-4mm long, with a gray-brown irregular curve. This is the trace of scabies burrowing. 3.The rash occurs in the thin and tender skin, especially in the finger crevices, wrist flexure, small abdomen, breast, armpit, lower abdomen, groin, pubic area, etc. The head and palmoplantar are not easily involved. The skin lesions are mainly corn-sized papules or papules. 4, scabies nodules: in the scrotum, penis, labia, groin, etc. occur in the size of the yellow bean light red nodules, this is scabies nodules. This nodule often does not disappear for a long time and is often accompanied by intense itching. 5, because scabies patients itch intensely, patients unconsciously scratch, and often appear scratches and scabs of the skin. 6, because the secretions of scabies stimulate the skin, together with scratching and other factors, the skin appears erythema, papules, blisters and other damage, which is secondary to eczematization, often aggravating the itching. 7, scabies patients due to scratching, poor hygiene, or hot climate, sweating and other reasons, the skin is easy to secondary infection, secondary pustules, folliculitis, boils, superficial lymph node enlargement symptoms. 8, because scabies secondary infection, and scabies secretions and bacterial infection and other factors can act as antigens in the body, followed by nephritis, when patients can appear weakness, swelling, lumbago and other symptoms.