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Scabies

Scabies. Amy Weyer. Background Information . Scabies is a skin disease caused by the mite Sarcoptes scabiei More than 300 million cases occur worldwide every year It is also known as the human itch mite or the scabies itch mite. Taxonomy . Kingdom- Animalia Phylum- Arthropoda

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Scabies

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  1. Scabies Amy Weyer

  2. Background Information • Scabies is a skin disease caused by the mite Sarcoptesscabiei • More than 300 million cases occur worldwide every year • It is also known as the human itch mite or the scabies itch mite

  3. Taxonomy • Kingdom- Animalia • Phylum- Arthropoda • Class- Arachnida • Order- Acarina • Family- Sarcoptidae • Genus- Sarcoptes • Species- scabiei

  4. Geographic Range Worldwide Affects all socioeconomic classes in all climates

  5. Host • Definitive Host: Humans (host specific) • Intermediate Host: none

  6. Morphology • Adults: 8 legs, Round body, Females are larger than males (<0.5 mm in length) • Larvae: 6 legs • Eggs: oval,(0.1-0.15 mm in length)

  7. Life Cycle

  8. Symptoms • Itching (usually worse at night) • Tracks of small blisters or red bumps on skin • Crusty or scaly skin which is called crusted scabies (more severe)

  9. Symptoms cont. • The itchy bumps and blisters usually occur in the folds of the skin: • Armpits • Under nails • Male genital area • Belt line • Between fingers • Inner thighs

  10. Diagosis • Examination of skin for mite burrows • Skin scraping to look for mites or eggs under the microscope

  11. Treatment • Permethrin cream (5%) • Crotamiton and Ivermectin are alternatives • All clothes and bedding used by an infested person should be washed in hot water and dried in a hot dryer

  12. Controls • Don’t share personal items such as combs, clothes, towels, bedding • Change clothing regularly • Wash bedding regularly

  13. References • http://www.mayoclinic.com/health/scabies/DS00451/DSECTION=treatments-and-drugs • http://www.herpes-coldsores.com/std/scabies.htm#Prevention • http://www.dpd.cdc.gov/dpdx/html/scabies.htm • http://www.stanford.edu/class/humbio103/ParaSites2004/Scabies/Scabies%20Home.htm

  14. Review • What is the geographic range? • How is it transmitted between humans? • How is it diagnosed? • What is the treatment? • What is one control method?

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