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==Overview==
==Overview==
Norovirus infection usually presents as acute-onset [[vomiting]], watery non-bloody [[diarrhea]] with [[abdominal cramps]], and [[nausea]]. [[Low-grade fever]] also occasionally occurs, and vomiting is more common in children. [[Dehydration]] is the most common complication, especially among the young and elderly, and may require medical attention. Symptoms usually last 24 to 60 hours.
Symptoms of norovirus infection include malaise, fever, stabbing diffuse abdominal pain, diarrhea, vomiting, and anorexia. Parents of infected children may often report easy irritability and oliguria/anuria.
==History==
==Symptoms==
Norovirus infection can cause illnesses including:
Symptoms of norovirus gastroenteritis include the following:
*[[Stomach flu]]: This “stomach flu” is not related to the [[flu]] (or [[influenza]]), which is a respiratory illness caused by [[influenza virus]].
*[[Fever]]
*[[Viral gastroenteritis]]: The most common name for illness caused by norovirus. [[Gastroenteritis]] refers to an [[inflammation]] of the stomach and intestines.
*[[Acute gastroenteritis]]
*Non-bacterial gastroenteritis
*[[Food poisoning]]: However, there are other causes of food poisoning.
*[[Calicivirus]] infection


==Common Symptoms==
*[[Abdominal pain]] (usually stabbing, diffuse)
Norovirus causes [[inflammation]] of the [[stomach]] or [[intestines]] or both. This is called [[acute gastroenteritis]].
 
The most common symptoms of norovirus infection include:
*[[Diarrhea]] (usually watery)
*[[Diarrhea]]
*[[Vomit]]
*[[Vomit]]
*[[Nausea]]
*[[Nausea]]
*[[Stomach pain]]
*[[Headache]]
 
*[[Malaise]]
Studies with volunteers given stool filtrates have shown that asymptomatic infection may occur in as many as 30% of infections, although the role of [[asymptomatic]] infection in norovirus transmission is not well understood.
*[[Anorexia]]
*[[Irritation]] (in children)
*[[Oliguria]] / [[anuria]] (in children)


Patient with norovirus illness can feel extremely ill and throw up or have [[diarrhea]] many times a day. This can lead to [[dehydration]], especially in young children, older adults, and people with other illnesses. Most people with norovirus illness get better within 1 to 3 days. Symptoms of dehydration include:
*Decrease in [[urination]]
*[[Dry mouth]] and throat
*Feeling [[dizzy]] when standing up
*Crying with few or no tears, sleepiness, and fussiness in children
==Less Common Symptoms==
Other symptoms include:
*[[Fever]]
*[[Headache]]
*[[Muscle ache|Body ache]]s
== References ==
== References ==
{{Reflist|2}}
{{Reflist|2}}

Revision as of 17:16, 8 December 2015

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Symptoms of norovirus infection include malaise, fever, stabbing diffuse abdominal pain, diarrhea, vomiting, and anorexia. Parents of infected children may often report easy irritability and oliguria/anuria.

Symptoms

Symptoms of norovirus gastroenteritis include the following:

References


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