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Valproate-induced enuresis: a prospective study.

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Secondary enuresis is a common side effect in children treated with valproate, often unreported but reversible. Age is a key predictor for this adverse event in pediatric epilepsy management.

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Area of Science:

  • Pediatric Neurology
  • Clinical Pharmacology

Background:

  • Valproate is a widely used antiepileptic drug in children.
  • Secondary enuresis is a potential adverse effect that may impact quality of life.

Purpose of the Study:

  • To determine the incidence and characteristics of secondary enuresis in pediatric patients initiating valproate therapy.
  • To identify factors associated with the development of valproate-induced enuresis.

Main Methods:

  • Prospective study of 72 children (aged 5-12 years) diagnosed with epilepsy and treated with valproate.
  • Systematic recording of adverse events, specifically inquiring about enuresis at follow-up visits.

Main Results:

  • Secondary enuresis developed in 24% (17/72) of children, with onset after an average of 19.8 days.
  • Age was the only significant predictor for enuresis development.
  • Enuresis resolved in all cases upon valproate discontinuation and in most cases while continuing the medication.

Conclusions:

  • Secondary enuresis is a frequent, often unreported, adverse event associated with valproate in children.
  • The condition is generally reversible, highlighting the importance of monitoring.
  • Age is a critical factor in predicting the risk of enuresis.