When should a diagnosis of crusted scabies be considered?

Updated: Oct 13, 2020
  • Author: Megan Barry, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Crusted scabies can be easily confused with severe dermatitis or psoriasis because widespread, crusted lesions appear with thick, hyperkeratotic scales over the elbows, knees, palms, and soles. The diagnosis of crusted scabies should be considered when suspected dermatitis or suspected psoriasis does not respond to usual treatments. (See the images below.) [2]

Crusted scabies. Courtesy of William D. James, MD. Crusted scabies. Courtesy of William D. James, MD.
Crusted scabies. Courtesy of Kenneth E. Greer, MD. Crusted scabies. Courtesy of Kenneth E. Greer, MD.

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