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Image Number 537 (Scabies crusted)


Diagnosis: Scabies crusted

Site: Hand,dorsum

Sex: F

Age: 70

Type: Clinical

Description: Crusted plaques and erosions

Submitted by: Shahbaz Janjua

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Differential Diagnosis


Crusted or Norwegian scabies was described in 1848 by Danielssen and Boeck as a severe form of human scabies characterized by the presence of thick crusted lesions containing a large number of parasites.  Crusted scabies usually develops in patients with defective T-cell immune response, or reduced cutaneous sensibility due to physical or mental debilitation.  Scabies can develop in association with transplantation, AIDS, T-cell leukemia or lymphoma and has been observed in patients with systemic lupus erythematosus, and dermatomyositis. Crusted scabies was also described in otherwise healthy individuals using potent topical coricosteroids

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