Symptoms of flu b

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Symptoms of Influenza B

Common Symptoms of Influenza B

Influenza B, a type of flu virus, typically presents with a range of symptoms that can vary in severity. Common symptoms include fever or feeling feverish with chills, cough, sore throat, runny or stuffy nose, muscle or body aches, headaches, and fatigue 2Stephenson2009. Some individuals, particularly children, may also experience vomiting and diarrhea .

Neurological and Muscular Symptoms

In children, influenza B can lead to neurological and muscular complications. A study involving 355 pediatric patients found that 7.9% exhibited such symptoms. The most common neurological symptom was febrile seizures, occurring in 67.9% of the affected children. Other symptoms included myositis (17.9%), increased intracerebral pressure, delirium, severe headache, and in rare cases, meningitis with myocarditis . These findings highlight the importance of monitoring for neurological symptoms during influenza B outbreaks in pediatric populations.

Gastrointestinal Symptoms

Influenza B can also cause significant gastrointestinal symptoms, particularly in children. Abdominal pain, sometimes severe enough to be mistaken for acute appendicitis, has been reported. Other gastrointestinal symptoms include nausea, vomiting, and diarrhea . These symptoms can complicate the clinical picture and require careful differential diagnosis to avoid unnecessary surgical interventions.

Severe Complications

While most cases of influenza B are mild, severe complications can occur. These include secondary bacterial infections such as pneumonia, which is often caused by pneumococci and staphylococci . In rare instances, influenza B can lead to rhabdomyolysis, a condition characterized by rapid muscle breakdown, which can result in acute respiratory failure and even death . Additionally, severe chest diseases, hyperpyrexia, and neurological disorders have been observed in hospitalized patients .

Conclusion

Influenza B presents with a wide range of symptoms, from common respiratory and systemic signs like fever, cough, and muscle aches, to more severe neurological, muscular, and gastrointestinal complications. While most cases are mild, the potential for severe outcomes necessitates vigilant monitoring and appropriate medical intervention, especially in vulnerable populations such as children and the elderly. Understanding the full spectrum of symptoms associated with influenza B can aid in timely diagnosis and management, ultimately improving patient outcomes.

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Most relevant research papers on this topic

Neurological and muscular manifestations associated with influenza B infection in children.

Influenza B infection in children is associated with relatively mild neurological and muscular symptoms, with febrile seizures being the most common, but rare severe complications may occur.

2013·

31citations

·J. Moon et al.

Pediatric neurology·

DOI

Influenza fact sheet.

Flu symptoms include fever, cough, sore throat, runny or stuffy nose, muscle or body aches, headaches, fatigue, and sometimes vomiting and diarrhea.

2003·

57citations

Releve epidemiologique hebdomadaire

Gastric 'flu influenza B causing abdominal symptons in children.

Influenza-B virus causes abdominal pain in children, often severe enough to require differentiation from acute appendicitis, with rapid diagnosis and management being crucial.

1975·

55citations

·A. Kerr et al.

Lancet·

DOI

Fighting the Flu

Influenza symptoms include fever, chills, body aches, headache, fatigue, and loss of appetite.

2009·

2citations

·J. Stephenson

JAMA·

DOI

[Severe course of influenza B complicated by rhabdomyolysis and acute respiratory failure resulting in death].

Influenza B can cause severe muscle weakness and rhabdomyolysis, leading to acute respiratory failure and death in a 51-year-old male.

Case Report

2018·

1citation

·J. Sagan et al.

Klinicka mikrobiologie a infekcni lekarstvi

Hepatitis B infection.

Hepatitis B infection can cause various symptoms, but most people recover fully and some may carry the virus for a lifetime.

Literature Review

1989·

96citations

·A. Rattan et al.

Indian pediatrics

Understanding the symptoms of the common cold and influenza

New knowledge of cytokines helps explain some previously folkloric symptoms of colds and flu, improving our understanding of their mechanisms.

Literature Review

2005·

577citations

·R. Eccles

The Lancet. Infectious Diseases·

DOI

Characteristics of hospitalized adult patients with laboratory documented Influenza A, B and Respiratory Syncytial Virus – A single center retrospective observational study

FluA and FluB both contribute equally to hospitalizations, but RSV has a greater impact on older, sicker patients and worse outcomes, while vaccination appears to protect against FluB hospitalizations.

Rigorous Journal

2019·

39citations

·R. Cohen et al.

PLoS ONE·

DOI

Severe illness with influenza B.

Influenza B can cause severe illness in patients of all ages, with no significant underlying disease, and is not limited to debilitated hosts.

Case Report

1980·

70citations

·W. Baine et al.

The American journal of medicine·

DOI

Predicting influenza infections during epidemics with use of a clinical case definition.

A clinical case definition including fever (temperature of >38 degrees C) and cough effectively predicted influenza infections during the 1998-1999 flu season, with 86.8% positive predictive value, 39.3% negative predictive value, 77.6% sensitivity, and 55.0% specificity.

2000·

369citations

·G. Boivin et al.

Clinical infectious diseases : an official publication of the Infectious Diseases Society of America·

DOI

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