Norwegian scabies is also known as crusted scabies. Immunocompromised and elderly individuals are most commonly affected. It may also be associated with Down syndrome. The treatment involves following: - permethrin - crotamitone - ivermectin (oral) - antihistamines - clean linens and bedclothes Reference: https://www.medicinenet.com/scabies_pictures_slideshow/article.htm Image via: https://www.jpeds.com/article/S0022-3476(19)30157-X/fulltext