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Exanthem


Source: http://en.wikipedia.org/wiki/Exanthem
Updated: 2017-02-07T12:12Z
Exanthem
Rash of rubella on skin of child's back.JPG
rubella
Classification and external resources
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ICD-10A38, B05-B09
ICD-9-CM034, 055-057, 782.1
DiseasesDB25831
Patient UKExanthem
MeSHD005076
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An exanthem or exanthema (from Greek ἐξάνθημα exánthēma, "a breaking out"[1]) is a widespread rash usually occurring in children. An exanthem can be caused by toxins, drugs, or microorganisms, or can result from autoimmune disease.

It can be contrasted with an enanthem.

Infectious Exanthem

Historically, six "classical" infectious childhood exanthems have been recognized,[2] four of which are viral. Numbers were provided in 1905.[3]

The four viral exanthema have much in common, and are often studied together as a class. They include:

NameNumberVirus
(rubeola) measles"first disease"measles virus
rubella, ("German Measles") identified in 1881.[4]"third disease"rubella virus
erythema infectiosum, identified as a distinct condition in 1896.[5]"fifth disease"parvovirus B19
roseola infantum"sixth disease"HHV-6 and HHV-7

Scarlet fever, or "second disease", is associated with the bacterium Streptococcus pyogenes. Fourth disease, a condition whose existence is not widely accepted today, was described in 1900 and is postulated to be related to the bacterium Staphylococcus aureus.[4]

Many other common viruses apart from the ones mentioned above can also produce an exanthem as part of their presentation, though they are not considered part of the classic numbered list:

See also

References

  1. ^ "Roseola Glossary of Terms with Definitions on MedicineNet.com". 
  2. ^ Bialecki C, Feder HM, Grant-Kels JM (November 1989). "The six classic childhood exanthems: a review and update". J Am Acad Dermatol. 21 (5 Pt 1): 891–903. PMID 2681288. 
  3. ^ "fifth disease" at Dorland's Medical Dictionary
  4. ^ a b Weisse ME (January 2001). "The fourth disease, 1900-2000". Lancet. 357 (9252): 299–301. PMID 11214144. doi:10.1016/S0140-6736(00)03623-0. 
  5. ^ Altman, Lawrence K (November 30, 1982). "THE DOCTOR'S WORLD". The New York Times. Retrieved 2009-11-07. 
  6. ^ http://www.cdc.gov/mmwr/pdf/r/rr5504.pdf

External links

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