swimmer's itch

noun Pathology.
an inflammation of the skin, resembling insect bites, caused by burrowing larval forms of schistosomes.

1925–30; so called because the schistosomes enter the skin from untreated water

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American Heritage
Medical Dictionary

swimmer's itch swim·mer's itch (swĭm'ərz)
See schistosome dermatitis.

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

swimmer's itch

an infection of the skin marked by prickling sensations and itching, caused by invasion of the skin by larvae of trematode worms of the genus Schistosoma, often found in freshwater lakes and ponds.

Learn more about swimmer's itch with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Swimmer's itch is a skin rash caused by an allergic reaction to certain parasites of birds and mammals.
Permits are required to chemically control nuisance aquatic plants, algae, and swimmer's itch.
Preventive measures can be taken, and there are no permanent effects from swimmer's itch.
Their droppings are the cause of swimmer's itch, and they cause fecal coliform contamination of the lake water.
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