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Encephalitis in infectious mononucleosis
Abstract:
Three cases of infectious mononucleosis encephalitis are presented in which the aetiological diagnosis was established by specific Epstein-Barr virus serology. Paul-Bunnell-Davidsohn tests were negative in all cases, and characteristic nonneurological features of infectious mononucleosis were present in only one. The 3 cases had blood serological tests diagnostic of a recent infection with Epstein-Barr virus. The Epstein-Barr virus is one of the more common causes of sporadic encephalitis particularly in young patients and the diagnosis may be considered even in the absence of systemic features of mononucleosis. As there is a substantial false negative rate with the Paul-Bunnell test, confirmation of recent infection may be gained by specific viral serology.
Insights
Specific Epstein-Barr virus serology is crucial for diagnosing infectious mononucleosis encephalitis, even when standard tests are negative and typical symptoms are absent. This approach aids in identifying this common cause of sporadic encephalitis in young patients.
Area of Science:
- Neurology
- Virology
- Infectious Diseases
Background:
- Infectious mononucleosis encephalitis is a serious neurological complication.
- Diagnosis can be challenging due to atypical presentations.
Purpose of the Study:
- To highlight the utility of specific Epstein-Barr virus serology in diagnosing encephalitis.
- To emphasize EBV as a cause of sporadic encephalitis, especially in young individuals.
Main Methods:
- Presentation of three clinical cases of encephalitis.
- Utilized specific Epstein-Barr virus serology for etiological diagnosis.
- Compared results with standard Paul-Bunnell-Davidsohn tests.
Main Results:
- Specific Epstein-Barr virus serology confirmed recent infection in all three cases.
- Paul-Bunnell-Davidsohn tests were negative in all cases.
- Typical non-neurological symptoms of mononucleosis were present in only one patient.
Conclusions:
- Specific Epstein-Barr virus serology is essential for diagnosing infectious mononucleosis encephalitis.
- Diagnosis should be considered even without systemic mononucleosis features.
- Reliance on the Paul-Bunnell test can lead to missed diagnoses due to false negatives.