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Scabies: an Overview

By HERWriter
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Just reading the word “scabies” is enough to make your skin itch, which is actually an appropriate reaction. You may be asking, “What are scabies?” But a more correct question is, “What is scabies?” Scabies is a condition that causes a rash and severe itching on the skin.

Scabies is caused by a tiny mite called Sarcoptes scabiei. Scabies mites are tiny parasites. They differ from insects because mites have eight legs while insects have only six legs. Scabies mites are too small to be seen without a magnifying glass or microscope. They are able to walk, but do not jump or fly.

Scabies mites burrow into the upper layer of the skin where they lay their eggs. When the eggs hatch, the new mites continue the life cycle by maturing and laying more eggs. The presence of the mites in the skin triggers an allergic reaction which is the cause of intense itching.

Scabies infection is found all over the world and is common in all races and social classes. It is estimated that there are about 300 million cases of scabies worldwide each year.

Human scabies mites cause the scabies infection only in humans. The same mites do not infect animals, so a scabies infection cannot be spread by contact with pets or other animals. The mite that causes infection in dogs or cats may cause a mild itch if they come in contact with a human, but because those mites cannot thrive on human skin, the itching will soon go away.

Scabies is most often spread by skin-to-skin contact, especially prolonged contact. Sexual activity is a common way scabies can be shared, which has led some people to refer to scabies as an STD or sexually transmitted disease.

Sharing scabies involves close contact, so it is unlikely that you could catch scabies by brief contact such as shaking hands. Scabies mites can only live away from a host body for 24 to 36 hours, so it is not likely that mites will be transferred off bed linens or from clothing hung together in a closet.

Effective treatments are available to get rid of scabies. Left untreated, the infection and itching will become increasingly severe. If you are concerned that you may have been exposed to scabies or may have the condition, talk to your health care provider.


Mayo Clinic. Scabies. Web. November 30, 2011.

Centers for Disease Control and Prevention. Parasites – Scabies. Web. November 30, 2011.

Medicine Net. Scabies. Alan Rockoff, MD. Web. November 30, 2011.

PubMed Health. Scabies. Web. November 30, 2011.

Reviewed December 1, 2011
by Michele Blacksberg RN
Edited by Jody Smith

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December 20, 2011 - 1:42am
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We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.



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