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Infantile spasms

Richard A Hrachovy1, James D Frost

  • 1Peter Kellaway Section of Neurophysiology, Department of Neurology, Baylor College of Medicine, Houston, TX, USA; Michael E. DeBakey VA Medical Center, Houston, TX, USA.

Handbook of Clinical Neurology
|April 30, 2013
PubMed

Insights

Infantile spasms, a disorder in infants, present with specific seizure types and EEG patterns. Current treatments aim to stop spasms quickly, but long-term outcomes remain unclear.

Area of Science:

  • Neurology
  • Pediatrics
  • Epileptology

Background:

  • Infantile spasms (IS) are a distinct epilepsy syndrome affecting infants and young children.
  • Onset typically occurs around 6 months, with an incidence of 0.31 per 1000 live births.
  • Spasms present in flexor, extensor, or mixed forms, often in clusters upon waking.

Purpose of the Study:

  • To summarize the key characteristics of infantile spasms.
  • To outline diagnostic findings, including EEG patterns.
  • To discuss current treatment objectives and the uncertainty surrounding long-term outcomes.

Main Methods:

  • Review of existing literature on infantile spasms.
  • Analysis of clinical presentation, including age of onset and incidence.
  • Description of electroencephalogram (EEG) findings (interictal and ictal).

Main Results:

  • Infantile spasms have an average onset at 6 months.
  • Hypsarrhythmia or variants are typical interictal EEG findings.
  • No conclusive evidence shows treatments significantly alter long-term outcomes.

Conclusions:

  • The pathophysiological basis of infantile spasms is not fully understood.
  • Animal models are being developed to study IS mechanisms.
  • Further research is needed to clarify the long-term impact of infantile spasms and their treatments.

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