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Serum prolactin in seizure disorders

Sharmila Banerjee1, Premila Paul, V J Talib

  • 1Department of Pediatrics, Safdarjung Hospital, New Delhi, India.

Indian Pediatrics
|September 7, 2004
PubMed

Insights

Elevated prolactin levels after a seizure in children suggest an epileptic event, particularly generalized or complex partial seizures. This biomarker is highly specific for identifying true seizures versus seizure mimics.

Area of Science:

  • Pediatric Neurology
  • Clinical Biochemistry
  • Epileptology

Background:

  • Distinguishing epileptic seizures from seizure-like events in children is clinically challenging.
  • Prolactin (PL) levels have been investigated as a potential biomarker for epileptic seizures.
  • Understanding the post-ictal prolactin response is crucial for accurate diagnosis in pediatric neurology.

Purpose of the Study:

  • To determine the post-ictal prolactin (PL) response in various seizure types and seizure-like events in children.
  • To correlate prolactin levels with the duration of post-ictal periods.
  • To assess the diagnostic utility of elevated prolactin for identifying epileptic seizures.

Main Methods:

  • Patients were categorized into groups based on seizure type: generalized tonic-clonic, complex partial, simple partial seizures (Group I), febrile convulsions (Group II), and seizure mimics (Group III).
  • A control group (Group IV) was included for comparison.
  • Blood samples were collected within 2 hours post-event, and prolactin levels were measured.

Main Results:

  • Significantly elevated prolactin levels were observed exclusively in Group I (epileptic seizures).
  • Peak prolactin levels occurred within 10 minutes, returning to baseline by 100 minutes post-seizure.
  • Elevated prolactin demonstrated 64% sensitivity and 98% specificity for epileptic seizures.

Conclusions:

  • A high prolactin level within 100 minutes post-event is indicative of a generalized or complex partial epileptic seizure in children.
  • Prolactin serves as a valuable, highly specific biomarker for differentiating epileptic seizures from other conditions.
  • This finding aids in the accurate diagnosis and management of pediatric seizure disorders.

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