What is crusted (Norwegian) scabies?

Updated: Oct 13, 2020
  • Author: Megan Barry, MD; Chief Editor: Dirk M Elston, MD  more...
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Crusted, or Norwegian, scabies (so named because the first description was from Norway in the mid-1800s) is a distinctive and highly contagious form of the disease. In this variant, hundreds to millions of mites infest the host individual, who is usually immunocompromised, elderly, or physically or mentally disabled and impaired. (Assessment of immune function may be indicated in individuals presenting with crusted scabies.) [11, 12]  Some data suggest a higher incidence of autoimmune diseases in patients with scabies. [13]

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