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Unilateral epididymo-orchitis: a rare complication of MMR vaccine

A M Abdelbaky1, D B Channappa, S Islam

  • 1Urology Department, Burnley General Hospital, Burnley, UK. atherabdelbaky@yahoo.com

Annals of the Royal College of Surgeons of England
|May 22, 2008
PubMed

Insights

Epididymo-orchitis, an inflammation of the testis, is a rare complication following the measles, mumps, and rubella (MMR) vaccine. This case highlights a unique adverse event not previously documented in the UK.

Area of Science:

  • Pediatric Infectious Diseases
  • Vaccine Adverse Events
  • Clinical Case Reports

Background:

  • The measles, mumps, and rubella (MMR) vaccine is widely administered for childhood immunization.
  • Known complications include parotitis, meningitis, and encephalitis.
  • Testicular involvement is an exceptionally rare reported adverse event.

Observation:

  • An 18-year-old male presented with symptoms of epididymo-orchitis post-MMR vaccination.
  • Clinical presentation and diagnostic workup confirmed testicular inflammation.

Findings:

  • This case represents the first documented instance of epididymo-orchitis following MMR vaccination in the United Kingdom.
  • The patient's condition was attributed as a rare adverse reaction to the vaccine.

Implications:

  • Highlights the importance of considering rare vaccine-related complications in differential diagnoses.
  • Contributes to the pharmacovigilance data on MMR vaccine safety.
  • Suggests the need for continued monitoring and reporting of unusual vaccine side effects.

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