Scabies nodules may be contagious for ten years. Scabies nodules are an immune response caused by the scabies mite and its excretions, and are primarily characterized by the appearance of mung bean to soybean-sized nodules on the surface of the skin, most of which are accompanied by intense itching. Some studies have now shown that most scabies nodules do not have scabies worms in them, but a few studies have found scabies worms in sections of the nodules. Scabies nodules are not contagious if they do not have scabies worms in them, but if there are still scabies worms in them, they are equally contagious regardless of the length of time they have been there. Once the scabies nodules are found, it is recommended to go to the hospital in time for treatment. If you don’t go to the hospital in time, it is easy to cause the condition to be prolonged, and complications such as localized skin pigmentation, bacterial infections, or nephritis may occur.