Scabies (mite)

Skin-nontumor / Clinical dermatology
Infestations
Scabies (mite)

Author: Mowafak Hamodat, M.D., MB.CH.B, MSc., FRCPC (see Authors page)

Revised: 2 June 2016, last major update July 2011

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PubMed Search: Scabies (mite)

Table of Contents

Definition / General | Diagrams / Tables | Treatment | Micro Description | Micro Images

Definition / General

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

Diagrams / Tables

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Life cycle

Treatment

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

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

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Contributed by Dr. Daniel Ostler

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Mite