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Canadian Journal of Infectious Diseases and Medical Microbiology
Volume 26 (2015), Issue 1, Pages 39-40
Case Report

An Elderly Long-Term Care Resident with Crusted Scabies

Matthew Sandre,1 Filip Ralevski,2 and Neil Rau3,4

1Michael G DeGroote School of Medicine, Hamilton, Canada
2Public Health Ontario Laboratories, Toronto, Canada
3Halton Healthcare Services, Oakville, Canada
4University of Toronto School of Medicine, Toronto, Ontario, Canada

Copyright © 2015 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Crusted scabies is a highly contagious form of scabies. Altered immune response, nutritional deficiencies and modified host response are all risk factors for crusted scabies. The authors report a case involving a patient found to have a chronic maculopapular, erythematous rash with large hyperkeratotic, white and grey plaques on the soles of both feet. An ultimate diagnosis of crusted scabies was reached after a delay in diagnosis suspected to be caused by the similarity in appearance to more common skin conditions such as psoriasis. After topical permethrin was unsuccessful, intermittent dosing of oral ivermectin resulted in a rapid reduction in cutaneous plaques.