Pre-Pregnancy Counseling for Women with Epilepsy

Medication Considerations

The type of antiepileptic medication is the most important factor to consider before pregnancy, as certain drugs carry significantly higher teratogenic risks that directly impact fetal outcomes, according to the Journal of Neurology, Neurosurgery and Psychiatry 1, 2, 3.
Medication type determines teratogenic risk, with certain antiepileptic drugs, such as valproate, carrying substantially higher risks of major congenital malformations and neurodevelopmental impairment compared to others 3, 4.
The American Academy of Neurology recommends that antiepileptic drug treatment be reviewed to ensure it is correct for the particular seizure type and not contributing to endocrine problems or posing teratogenic risks, before pregnancy 1, 2, 3.

Seizure control is critical for reducing maternal and fetal morbidity and mortality, but it is achieved through appropriate medication selection, making medication type the primary consideration 1, 2, 3.
The International League Against Epilepsy recommends that medication changes be made before pregnancy, as switching medications during pregnancy introduces unnecessary risks if seizures are already controlled 1, 2.

The clinical algorithm for pre-pregnancy counseling involves reviewing current medication, assessing whether it is appropriate for the patient's specific seizure type, and evaluating the teratogenic risk profile of the current medication 1, 2, 3, 4.
If a patient is on a high-risk medication, such as valproate, consideration should be given to switching to a lower-risk alternative, if the seizure type permits 3, 4.

Particular attention should be paid to patients on valproate, as well as obese patients or those experiencing significant weight gain, due to the potential for reproductive endocrine disorders, including polycystic ovary syndrome 3, 4, 7.
The Endocrine Society recommends that antiepileptic drugs be reviewed for their potential to cause reproductive endocrine disorders, and that alternative medications be considered if necessary 3, 4.