Boils and carbuncles

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Tests and diagnosis

By Mayo Clinic staff

Doctors usually diagnose boils and carbuncles by considering signs, symptoms and medical history and looking at these distinctive sores.

If you have recurring infections, infections that don't respond to standard treatment or have a weakened immune system, your doctor may culture the drainage. During this test, your doctor uses a sterile swab to gently remove a small bit of pus or drainage from the boil or carbuncle. The sample is then cultured in a laboratory for the presence of bacteria.

Treatments and drugs Preparing for your appointment
References
  1. Habif TP. Furuncles and carbuncles. In Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh; New York, N.Y.: Mosby Elsevier; 2009. http://www.mdconsult.com/book/player/book.do?method=display&type=bookPage&decorator=header&eid=4-u1.0-B978-0-7234-3541-9..00018-3--s0295&uniq=215950578&isbn=978-0-7234-3541-9&sid=1042832232. Accessed Aug. 23, 2010.
  2. Baddour LM. Skin abscesses, furuncles, and carbuncles. http://www.uptodate.com/home/index.html. Accessed Aug. 23, 2010.
  3. Rakel RE. Furuncles and carbuncles. In: Rakel RE. Textbook of Family Medicine. 7th ed. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/das/book/body/215950578-5/1042832232/1481/236.html#4-u1.0-B978-1-4160-2467-5..50024-5--cesec94_966. Accessed Aug. 23, 2010.
  4. Tree tea oil. Natural Medicines Comprehensive Database. http://www.naturaldatabase.com/(S(iyok1uyiw1fl112ek3ax2lu2))/nd/Search.aspx?cs=MAYO&s=ND&pt=100&id=113&fs=ND&searchid=11129198. Accessed Aug. 23, 2010.
  5. Personal prevention of MRSA skin infections. Centers for Disease Control and Prevention. http://www.cdc.gov/mrsa/prevent/personal.html. Accessed Aug. 23, 2010.
  6. Archer GL. Staphylococcal infections. In: Goldman L, et al. Cecil Medicine. 23rd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/130655031-2/826443940/1492/1112.html#4-u1. Accessed Aug. 23, 2010.
DS00466 Oct. 19, 2010

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