Nocturnal frontal lobe epilepsy in mucopolysaccharidosis

Paolo Bonanni1, Anna Volzone1, Giovanna Randazzo1

  • 1Epilepsy and Clinical Neurophysiology Unit, IRCCS "E. Medea", Conegliano, TV, Italy.

Brain & Development
|January 23, 2014
PubMed

Insights

Nocturnal frontal lobe epilepsy (NFLE) can occur in children with mucopolysaccharidosis (MPS), presenting as sleep disturbances. Periodic monitoring is recommended for early detection of these seizures in MPS patients.

Area of Science:

  • Neurology
  • Genetics
  • Sleep Medicine

Background:

  • Mucopolysaccharidosis (MPS) is a group of rare genetic disorders.
  • Sleep disturbances are common in individuals with MPS.
  • Nocturnal frontal lobe epilepsy (NFLE) is characterized by seizures during sleep.

Observation:

  • Two children with MPS presented with significant sleep disturbances.
  • Long-term video-EEG monitoring (LT-VEEGM) revealed sleep-related hypermotor seizures consistent with NFLE.
  • This represents the first reported instance of NFLE in MPS patients.

Findings:

  • The high frequency of frontal lobe seizures in MPS can lead to sleep fragmentation and disturbances.
  • NFLE can occur in the context of lysosomal storage diseases like MPS.
  • Differential diagnosis between NFLE and parasomnias is crucial in MPS patients with sleep issues.

Implications:

  • Periodic LT-VEEGM is recommended for MPS patients, especially those with sleep disorders.
  • These findings expand the known causes of NFLE.
  • Highlights the importance of considering neurological comorbidities in rare genetic disorders.

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