Influenza history and symptoms: Difference between revisions
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===Common Symptoms=== | ===Common Symptoms=== | ||
*[[Fever]] | *[[Fever]] | ||
*[[Chills]] | |||
*[[Dizziness]] | |||
*Flushed [[face]] | |||
* Muscle and body aches | * Muscle and body aches | ||
* [[Cough]] | * [[Cough]] | ||
| Line 35: | Line 38: | ||
* Reddened eyes, skin (especially face), mouth, throat and nose | * Reddened eyes, skin (especially face), mouth, throat and nose | ||
* [[Shortness of breath]] (especially in asthmatic patients) | * [[Shortness of breath]] (especially in asthmatic patients) | ||
*[[Loss of appetite]] | |||
*[[Sweating]] | |||
*[[Muscle stiffness]] | |||
==References== | ==References== | ||
Revision as of 13:24, 24 October 2014
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Alejandro Lemor, M.D. [2]
Overview
Influenza illness can include several non-specific symptoms, such as fever, muscle aches, headache, lack of energy, dry cough, sore throat, and runny nose. The fever and body aches can last 3-5 days and the cough and lack of energy may last for 2 or more weeks. The symptoms of the flu are more severe than their common-cold equivalents.
History and Symptoms Adapted from CDC[1]
- The typical incubation period for influenza is 1-4 days.
- Adults shed influenza virus from the day before symptoms begin through 5-10 days after illness onset. However, the amount of virus shed, and presumably infectivity, decreases rapidly by 3-5 days after onset in an experimental human infection model.
- Young children also might shed virus several days before illness onset, and children can be infectious for 10 or more days after onset of symptoms.
- Severely immunocompromised persons can shed virus for weeks or months.
- Uncomplicated influenza illness is characterized by the abrupt onset of constitutional and respiratory signs and symptoms, such as fever, myalgia, headache, malaise, nonproductive cough, sore throat, and rhinitis.
- Among children, otitis media, nausea, and vomiting also are commonly reported with influenza illness. Uncomplicated influenza illness typically resolves after 3-7 days for the majority of persons, although cough and malaise can persist for >2 weeks.
- However, influenza virus infections can cause primary influenza viral pneumonia; exacerbate underlying medical conditions such as pulmonary or cardiac disease lead to secondary bacterial pneumonia, sinusitis, or otitis media; or contribute to coinfections with other viral or bacterial pathogens.
- Young children with influenza virus infection might have initial symptoms mimicking bacterial sepsis with high fevers, and febrile seizures have been reported in 6%-20% of children hospitalized with influenza virus infection.
Common Symptoms
- Fever
- Chills
- Dizziness
- Flushed face
- Muscle and body aches
- Cough
- Sneezing
- Runny nose
- Fatigue
- Headache
- Irritated watering eyes
- Nasal congestion
- Sore throat
Less Common Symptoms
- Nausea
- Vomiting
- Diarrhea
- Reddened eyes, skin (especially face), mouth, throat and nose
- Shortness of breath (especially in asthmatic patients)
- Loss of appetite
- Sweating
- Muscle stiffness