stricture

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The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics

10 Best Hockey Players of All Time

ripped torn flag, pirate, skull

Are There Laws on the High Seas?

Wasp spider. Argiope bruennichi. Orb-weaver spider. Spiders. Arachnid. Cobweb. Spider web. Spider's web. Spider silk. Black and yellow striped wasp spider spinning a web.

Do We Really Swallow Spiders in Our Sleep?

Aspirin pills.

7 Drugs that Changed the World

Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.

6 Lakes That Are Drying Up

stricture

pathology

Learn about this topic in these articles:

diagnostic tests

In esophagogastroduodenoscopy
…if there is an esophageal stricture or obstruction or persistent vomiting of unknown cause. Esophageal strictures, if benign, can be successfully dilated, and upper gastrointestinal bleeding can be controlled by means of electrocoagulation. If the bleeding is from esophageal varices, they can be injected with a sclerosing (hardening) agent. A…
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occurrence in esophagus

In digestive system disease: Strictures
Fibrous (scar) tissue contracts over time. Consequently, when fibrous tissue develops around a tube, as in the esophagus, in response to inflammation, the contracting scar narrows the lumen, causing a stricture, and may eventually obstruct it completely. Strictures are readily diagnosed by X ray…
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hairball

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ripped torn flag, pirate, skull

Are There Laws on the High Seas?

Artist interpretation of space asteroids impacting earth and moon. Meteoroids, meteor impact, end of the world, danger, destruction, dinosaur extinct, Judgement Day, Doomsday Predictions, comet

Major Mass Extinctions

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

San Francisco, California/USA-1/18/20: Womens March at Civic Center marching with signs of political protest regarding equality also embracing 2020 presidential candidates and celebrating equality

How Does the U.S. Government Define the Difference Between a Protest and a Riot?

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Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.

How Rye Bread May Have Caused the Salem Witch Trials

American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.

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hairball

feline disorder

Also known as: furball

Written and fact-checked by The Editors of Encyclopaedia Britannica

Article History

Also called:: furball

Related Topics:: animal disease; disease; cat; feline

hairball, gastrointestinal obstruction occurring in cats and resulting from accumulation of swallowed hair; the condition is marked by abdominal distension, vomiting, and weight loss. Hairballs can be prevented by regular brushing to remove loose hair or by oral administration of small amounts of petroleum jelly or commercially available medications.

This article was most recently revised and updated by Erik Gregersen.