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Related Experiment Videos

Eosinophilic pleural effusion associated with valproic acid administration

J Kaufman1, I M O'Shaughnessy

  • 1Department of Medicine, Medical College of Wisconsin, Milwaukee 53226, USA.

Southern Medical Journal
|August 1, 1995
PubMed
Summary

A patient developed eosinophilic pleural effusion and peripheral blood eosinophilia. Symptoms resolved after discontinuing valproic acid, suggesting it as a potential cause.

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Area of Science:

  • Pulmonology
  • Clinical Medicine
  • Pharmacology

Background:

  • Eosinophilic pleural effusion is a rare condition often associated with various underlying causes.
  • Drug-induced pleural effusions are an important differential diagnosis that requires careful patient history.
  • Valproic acid is an anticonvulsant medication with a known side effect profile, but its association with pleural effusion is not well-established.

Observation:

  • A case study involving a patient presenting with unexplained eosinophilic pleural effusion and peripheral blood eosinophilia.
  • The patient was undergoing therapy with valproic acid for an unspecified condition.
  • Initial investigations failed to identify an alternative etiology for the pleural effusion and eosinophilia.

Findings:

  • Discontinuation of valproic acid therapy led to the complete resolution of both the pleural effusion and peripheral eosinophilia.

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  • This temporal relationship strongly suggests a causal link between valproic acid and the observed clinical presentation.
  • The pleural fluid analysis confirmed a significant eosinophilic predominance.

    • Implications:

    • Valproic acid should be considered a potential causative agent for drug-induced eosinophilic pleural effusion.
    • Clinicians should maintain a high index of suspicion for medication side effects in cases of unexplained eosinophilia and pleural effusions.
    • This case expands the known spectrum of adverse reactions associated with valproic acid therapy.