Phenytoin desensitization in a child with symptomatic localization-related epilepsy
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Published on: September 20, 2024
Seiko Itomi1, Akihisa Okumura, Taketo Ikuta
1Department of Pediatrics, Nagoya First Red Cross Hospital, Nagoya, Aichi, Japan. itomis@dsl.sun-inet.or.jp
Insights
This study shows that clinical desensitization to phenytoin can effectively manage refractory partial seizures in a child. This approach controlled seizures when other antiepileptic drugs failed, offering a new treatment option.
Area of Science:
- Pediatric Neurology
- Clinical Pharmacology
Background:
- Epilepsy management in children often requires exploring various antiepileptic drugs.
- Refractory epilepsy poses significant challenges, necessitating alternative therapeutic strategies.
Observation:
- A pediatric patient with a history of ischemic brain lesions presented with complex partial seizures refractory to multiple antiepileptic drugs.
- Initial phenytoin administration led to hypersensitivity reactions, including fever and rash, prompting discontinuation.
Findings:
- Clinical desensitization to phenytoin was successfully implemented in a pediatric patient with refractory partial seizures.
- Seizure control was achieved with a daily dose of 150mg phenytoin, in combination with primidone, without adverse events during the desensitization process.
Implications:
- Clinical desensitization to phenytoin represents a viable therapeutic option for pediatric patients with drug-hypersensitive, refractory epilepsy.
- This case highlights the potential of desensitization protocols to broaden treatment options for challenging epilepsy cases in children.
Abstract:
We reported a child with refractory partial seizures successfully managed by clinical desensitization to phenytoin. The patient had ischemic brain lesions due to cardiopulmonary arrest at 39 weeks of corrected age. He had complex partial seizures refractory to several antiepileptic drugs since 4 years of age. At 8 years 1 month of age, phenytoin was first administered. Fever and maculopapular rashes appeared at 10 days after phenytoin initiation, and then the drug was discontinued. At 8 years 8 months of age, desensitization was attempted because of refractoriness of seizures to drugs other than phenytoin. Desensitization was started at 1mg daily, and then the dose was doubled every week. His seizures were controlled by 150mg/day of phenytoin in combination with primidone. No problems have been observed during desensitization.
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