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[Pyridoxine-dependent seizures].

Bjug Akre1, Magnhild Rasmussen, Rigmor Lundby

  • 1Habiliteringsavdeling for barn og unge, Sørlandet sykehus Kristiansand, Postboks 416, 4604 Kristiansand. b-aak@frisurf.no

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|January 27, 2004
PubMed
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Pyridoxine-dependent seizures, a rare metabolic disorder, causes severe infant seizures resistant to standard treatment. Early diagnosis and pyridoxine (vitamin B6) administration are crucial for seizure control and developmental outcomes.

Area of Science:

  • Biochemistry
  • Genetics
  • Pediatric Neurology

Background:

  • Pyridoxine-dependent seizures (PDS) is a rare, autosomal recessive metabolic disorder.
  • Characterized by severe, prolonged seizures in infancy, often unresponsive to conventional anticonvulsants.
  • Delayed diagnosis and treatment with pyridoxine (vitamin B6) can be fatal.

Observation:

  • Presents a case of a ten-year-old girl with suspected PDS.
  • Highlights diagnostic challenges and treatment complexities.
  • Documents delayed development prior to diagnosis and significant improvement post-pyridoxine treatment.

Findings:

  • PDS exhibits variable clinical expression with diverse seizure types.
  • Diagnosis is primarily clinical, relying on response to pyridoxine administration.

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  • Pyridoxine dosage requirements vary; treatment aims for seizure control and optimal intellectual development.

    • Implications:

    • PDS may be underdiagnosed, necessitating increased awareness.
    • Early intervention is critical for improved neurodevelopmental outcomes.
    • Further research is needed to identify the specific gene and its product linked to PDS on chromosome 5.