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[Drug hypersensitivity syndrome to valproic acid]
N Picart1, B Périole, J Mazereeuw
1Service de Dermatologie, CHU Rangueil, Toulouse.
Presse Medicale (Paris, France : 1983)
|April 26, 2000
Summary
Sodium valproate, a non-aromatic anticonvulsant, rarely causes drug-induced hypersensitivity syndrome. This case highlights the importance of considering valproic acid in diagnosing hypersensitivity reactions, even with aromatic anticonvulsants typically implicated.
Area of Science:
- Pharmacology
- Toxicology
- Dermatology
Background:
- Drug-induced hypersensitivity syndrome (DIHS) is a severe idiosyncratic reaction.
- Typically associated with aromatic anticonvulsants.
- Sodium valproate, a non-aromatic anticonvulsant, is an uncommon cause.
Observation:
- A 28-year-old woman developed DIHS after 5 weeks of sodium valproate treatment.
- Symptoms included rash, fever, lymphadenopathy, hypereosinophilia, and abnormal liver function.
- The reaction was confirmed via patch testing with diluted sodium valproate.
Findings:
- This case represents the second reported instance of DIHS induced by sodium valproate.
- The clinical presentation and diagnostic tests confirmed valproic acid as the causative agent.
- DIHS from valproic acid is rare but clinically significant.
Implications:
- Clinicians should consider sodium valproate as a potential cause of DIHS.
- Early diagnosis and drug withdrawal are crucial for managing DIHS.
- Further research may elucidate the mechanisms of valproate-induced hypersensitivity.