Herpes Zoster Before the First Birthday: A Case Report and Primary Care Perspective

Rui Guilherme Costa1, Mariana Bernardo2

  • 1USF Manuel Cunha, Family Health Unit, Coimbra Local Health Unit, Coimbra, PRT.

Cureus
|August 29, 2025
PubMed

Insights

This case report details a rare instance of infant herpes zoster (HZ), or shingles, in a six-month-old. The infant experienced a mild, localized rash and recovered fully within 10 days with conservative management.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Dermatology

Background:

  • Herpes zoster (HZ), commonly known as shingles, is caused by the reactivation of the varicella-zoster virus.
  • While typically seen in older adults, HZ can occur in infants, often presenting atypically.
  • Early recognition and management are crucial to prevent potential complications.

Observation:

  • A six-month-old male infant presented with a unilateral, dermatomal vesicular rash on the right upper limb and dorsum.
  • The infant had a history of varicella (chickenpox) at 48 days of age.
  • The infant was afebrile, asymptomatic, and in good general condition during the observation.

Findings:

  • Clinical presentation and history strongly suggested a diagnosis of herpes zoster.
  • The rash followed a distinct C7-C8 dermatomal distribution.
  • Complete resolution of the rash occurred within 10 days.

Implications:

  • This case highlights the importance of considering HZ in infants presenting with unusual rashes.
  • Routine health surveillance can facilitate early detection of uncommon pediatric conditions.
  • A conservative management approach was effective for this mild presentation of infant HZ, emphasizing the role of primary care physicians in managing rare pediatric cases.

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