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Scabies - Overview

Alternative Names

Sarcoptes scabiei

Definition of Scabies:

Scabies is a contagious skin disease caused by a species of mite that is very small.

Causes, incidence, and risk factors:

Scabies is found worldwide among people of all groups and ages. It is spread by direct contact with infected people and less often by sharing clothing or bedding. Sometimes whole families are affected.

The mites that cause scabies burrow into the skin and deposit their eggs, forming a burrow that looks like a pencil mark. Eggs mature in 21 days. The itchy rash is an allergic response to the mite.

Scabies rash and excoriation on the hand

Scabies mite, photomicrograph

Scabies mite, photomicrograph of the stool

Scabies mite, photomicrograph

Scabies mite, eggs, and stool photomicrograph

Reviewed last on: 10/11/2008
Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Jacobson CC, Abel EA. Parasitic infestations. J Am Acad Dermatol. 2007;56:1026-1043.

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