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Phenytoin hypersensitivity syndrome.
Summary
Phenytoin hypersensitivity syndrome (PHS) is a rare but serious condition. Prompt withdrawal of phenytoin and initiation of sodium valproate, with prednisolone if needed, effectively managed PHS cases.
Area of Science:
- Clinical immunology
- Dermatology
- Hepatology
Background:
- Phenytoin hypersensitivity syndrome (PHS) is a rare but severe adverse drug reaction.
- It is characterized by a distinct clinical presentation including rash, fever, lymphadenopathy, and hematologic abnormalities.
Observation:
- This study details the clinical, laboratory, and histopathologic findings in five cases of PHS.
- Patients presented with characteristic symptoms of PHS.
Findings:
- Cessation of phenytoin was the primary therapeutic intervention.
- Sodium valproate was initiated as an alternative anticonvulsant therapy.
- Prednisolone was administered to two patients whose eruptions did not resolve with conservative management.
Implications:
- Early recognition and withdrawal of phenytoin are crucial for managing PHS.
- Alternative anticonvulsant therapy, such as sodium valproate, is effective.
- Corticosteroids may be necessary for refractory cases, aiding in symptom resolution.