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fifth disease

[fifth di-zeez] /ˈfɪfθ dɪˌziz/
noun
1.
Pathology. a mild infection, most often seen in children or young adults, caused by a small virus ((the human parvovirus B19)) and marked by a blotchy rash on the cheeks, arms, and legs.
Also called erythema infectiosum [er-uh-thee-muh in-fek-shee-oh-suh m] /ˌɛr əˈθi mə ɪnˌfɛk ʃiˈoʊ səm/ (Show IPA).
Origin of fifth disease
so called because it was the fifth in a classification scheme of childhood eruptive diseases
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for erythema infectiosum

fifth disease

noun
1.
a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunk Also called slapped-cheek disease Technical name erythema infectiosum
Word Origin
C20: from its being among the five most common childhood infections
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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erythema infectiosum in Medicine

erythema infectiosum erythema in·fec·ti·o·sum (ĭn-fěk'shē-ō'səm)
n.
A mild infectious disease occurring mainly in early childhood, marked by a rosy-red maculopapular rash on the cheeks, often spreading to the trunk and limbs. Fever and arthritis may also be present. Also called fifth disease.

fifth disease n.
See erythema infectiosum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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