What is erythema infectiosum (Fifth disease)?

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Last updated: May 14, 2025View editorial policy

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From the Guidelines

Fifth disease is a self-limiting illness that requires supportive treatment, focusing on symptom management with acetaminophen or ibuprofen for fever and discomfort, as well as rest and adequate fluid intake. The disease is characterized by fever, headache, chills, myalgia, conjunctival suffusion, and less frequently by meningitis, rash, jaundice, or renal insufficiency, with symptoms that may be biphasic 1. Key features of the illness include:

  • Fever
  • Headache
  • Chills
  • Myalgia
  • Conjunctival suffusion
  • Potential for meningitis, rash, jaundice, or renal insufficiency in some cases Treatment should be tailored to the individual's symptoms, with adults taking standard doses of acetaminophen (650mg every 6 hours) or ibuprofen (400mg every 6 hours as needed), and children's dosing based on weight. It is essential to note that the illness is usually mild, lasting 1-3 weeks, but certain groups such as pregnant women, people with blood disorders, or immunocompromised individuals should seek medical attention if exposed, as complications can occur in these groups 1. Prevention measures include hand washing and avoiding close contact with infected individuals, although the virus is most contagious before the rash appears.

From the Research

Definition and Symptoms of Fifths Disease

There is no direct information available about Fifths disease in the provided studies.

Treatment and Management

  • The studies provided do not discuss the treatment of Fifths disease, but they do discuss the use of analgesic and antipyretic medications such as ibuprofen, acetaminophen, and aspirin 2, 3, 4, 5, 6.
  • Aspirin is not recommended for use in children due to the risk of Reye's syndrome, a rare but serious condition that can cause liver and brain damage 3, 4, 5, 6.
  • Ibuprofen and acetaminophen are considered safer alternatives for treating pain and fever in children 2.

Relationship between Aspirin and Reye's Syndrome

  • Some studies suggest a link between aspirin use and Reye's syndrome in children 4, 5, 6.
  • However, other studies argue that the evidence for this link is not conclusive 3.
  • The use of aspirin in children has declined significantly since the 1980s, and this decline has been accompanied by a decrease in the incidence of Reye's syndrome 5.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Reye's syndrome.

Epidemiologic reviews, 1989

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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