Erythema Infectiosum: A Narrative Review

Author:

Leung Alexander K. C.1ORCID,Lam Joseph M.2ORCID,Barankin Benjamin3,Leong Kin Fon4ORCID,Hon Kam Lun5ORCID

Affiliation:

1. Department of Pediatrics, The University of Calgary, Alberta Children’s Hospital, Calgary, Alberta, Canada

2. Department of Pediatrics and Department of Dermatology and Skin Sciences University of British Columbia, Vancouver, British Columbia, Canada

3. Toronto Dermatology Centre, Toronto, Ontario, Canada

4. Pediatric Institute, Kuala Lumpur General Hospital, Kuala Lumpur, Malaysia

5. Department of Paediatrics, The Chinese University of Hong Kong, and Department of Paediatrics and Adolescent Medicine, Hong Kong Children’s Hospital, Hong Kong

Abstract

Background: Erythema infectiosum occurs worldwide. School-aged children are most often affected. Since the diagnosis is mainly clinical, physicians should be well-versed in the clinical manifestations of erythema infectiosum to avoid misdiagnosis, unnecessary investigations, and mismanagement of the disease. Objective: The purpose of this article is to familiarize physicians with the wide spectrum of clinical manifestations and complications of erythema infectiosum associated with parvovirus B19 infection. Methods: A search was conducted in July 2022 in PubMed Clinical Queries using the key terms " Erythema infectiosum" OR “Fifth disease” OR “Slapped cheek disease”. The search strategy included all clinical trials, observational studies, and reviews published within the past 10 years. Only papers published in the English literature were included in this review. The information retrieved from the above search was used in the compilation of the present article. Results: Erythema infectiosum is a common exanthematous illness of childhood caused by parvovirus B19. Parvovirus B19 spreads mainly by respiratory tract secretions and, to a lesser extent, the saliva of infected individuals. Children between 4 and 10 years of age are most often affected. The incubation period is usually 4 to 14 days. Prodromal symptoms are usually mild and consist of low-grade fever, headache, malaise, and myalgia. The rash typically evolves in 3 stages. The initial stage is an erythematous rash on the cheeks, with a characteristic “slapped cheek” appearance. In the second stage, the rash spreads concurrently or quickly to the trunk, extremities, and buttocks as diffuse macular erythema. The rash tends to be more intense on extensor surfaces. The palms and soles are typically spared. Central clearing of the rash results in a characteristic lacy or reticulated appearance. The rash usually resolves spontaneously within three weeks without sequelae. The third stage is characterized by evanescence and recrudescence. In adults, the rash is less pronounced than that in children and is often atypical. Only approximately 20% of affected adults have an erythematous rash on the face. In adults, the rash is more frequently found on the legs, followed by the trunk, and arms. A reticulated or lacy erythema is noted in 80% of cases which helps to distinguish erythema infectiosum from other exanthems. Pruritus is noted in approximately 50% of cases. The diagnosis is mainly clinical. The many manifestations of parvovirus B19 infection can pose a diagnostic challenge even to the best diagnostician. Complications include arthritis, arthralgia, and transient aplastic crisis. In most cases, treatment is symptomatic and supportive. When parvovirus B19 infection occurs in pregnant women, hydrops fetalis becomes a real concern. Conclusion: Erythema infectiosum, the most common clinical manifestation of parvovirus B19 infection, is characterized by a “slapped cheek” appearance on the face and lacy exanthem on the trunk and extremities. Parvovirus B19 infection is associated with a wide spectrum of clinical manifestations. Physicians should be aware of potential complications and conditions associated with parvovirus B19 infection, especially in individuals who are immunocompromised, chronically anemic, or pregnant.

Publisher

Bentham Science Publishers Ltd.

Subject

Pediatrics, Perinatology and Child Health

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