Contents

SynopsisCodesLook ForDiagnostic PearlsDifferential Diagnosis & PitfallsBest TestsManagement PearlsTherapyReferences

View all Images (7)

Crusted scabies in Child
Other Resources UpToDate PubMed

Crusted scabies in Child

Contributors: Wendemagegn Enbiale MD, MPH, PhD, Karen Koch MBChB, MMed, FCDerm, Anisa Mosam MBChB, MMed, FCDerm, PhD, Belinda Tan MD, PhD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Crusted scabies (previously called Norwegian scabies) is a highly contagious and severe form of infestation with Sarcoptes scabiei var hominis, most often seen in patients who are malnourished, immunocompromised, institutionalized, or have a neurologic disease. This form of scabies often occurs in patients with HIV infection, especially in those with low CD4 counts. It has also been reported as an immune reconstitution inflammatory syndrome (IRIS) phenomenon ("unmasking" type). The condition is also seen in leukemia-lymphoma patients and in transplant patients. Crusted scabies occurs worldwide in indigent populations affecting all age groups. It is particularly prevalent in healthy indigenous communities in Northern Australia.

Pruritus is a key symptom in both types of scabies; however, patients with crusted scabies may be completely asymptomatic. While the typical patient with scabies has fewer than 10-20 mites present, thousands to millions are present in the patient with crusted scabies. Spread of scabies occurs via skin-to-skin contact but also via fomites.

Codes

ICD10CM:
B86 – Scabies

SNOMEDCT:
128870005 – Crusted scabies

Look For

Subscription Required

Diagnostic Pearls

Subscription Required

Differential Diagnosis & Pitfalls

To perform a comparison, select diagnoses from the classic differential

Subscription Required

Best Tests

Subscription Required

Management Pearls

Subscription Required

Therapy

Subscription Required

References

Subscription Required

Last Reviewed:05/22/2024
Last Updated:05/27/2024
Copyright © 2024 VisualDx®. All rights reserved.
Crusted scabies in Child
A medical illustration showing key findings of Crusted scabies : Acral distribution, Institutionalized population, Widespread distribution, Pruritus, Excoriations
Clinical image of Crusted scabies - imageId=403777. Click to open in gallery.  caption: 'Excoriated plaques with fine white scales around the first toe web.'
Excoriated plaques with fine white scales around the first toe web.
Copyright © 2024 VisualDx®. All rights reserved.