Itchy scabies nodules can be caused by the scabies mite not being completely eradicated, or it can be caused by localized irritation. Scabies is mainly a contact infectious skin disease caused by the scabies mite in the epidermal layer of human skin. It mostly occurs in the thinner skin areas, such as finger cracks, wrists, elbow pockets, and armpits, scrotums and so on. The principle of scabies treatment is to kill insects, stop itching, etc., generally based on drug treatment, commonly used drugs, including sulfur soap, lindane ointment, etc., the drugs need to be used under the guidance of a professional doctor. If the treatment is not carried out in accordance with the course of treatment or bed sheets, bedding, clothing, not thoroughly disinfected will lead to scabies mites multiply again to cause disease, scabies nodules itchy. In addition, itchy scabies nodules can also be caused by local clothing irritation resulting in contact dermatitis, this time you need to change clothes, if still can not be relieved, you can use topical hormone drugs such as mometasone furoate gel. Itchy scabies nodules should be promptly to the hospital for diagnosis and treatment under the guidance of a professional doctor.