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Skin-nontumor / Clinical Dermatology


Scabies (mite)

Reviewer: Mowafak Hamodat, MB.CH.B, MSc., FRCPC, Eastern Health, St. Johns, Canada (see Reviewers page)
Revised: 23 April 2014, last major update July 2011
Copyright: (c) 2002-2011, PathologyOutlines.com, Inc.


● Mite that produces burrows and extremely pruritic erythematous papules on interdigital skin, palms, wrists


● Topical permethrin (Can Fam Physician 2010;56:1005)


Life cycle

Micro description

● Burrow appears as cleft in upper epidermis containing mite body parts
● Epidermis exhibitis acanthosis, parakeratosis, spongiosis, with dense eosinophilic dermal infiltrate
● In the dermis, there is superficial perivascular and sometimes diffuse infiltrate of lymphocytes and histiocytes, sometimes accompaned by neutrophils and less often eosinophils
● In nodular skin lesions, the dermal infiltrate may be very dense and in addition to histiocytes, plasma cells, eosinophils, and lymphocytes, atypical and hyperchromatic cells may be evident

Micro images


Contributed by: Dr. Daniel Ostler, Baylor College of Medicine, Texas (USA)

End of Skin-nontumor / Clinical Dermatology > Infestations > Scabies (mite)

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