Healthy pregnancy hub

Epilepsy

Last Update: 18 Nov 2024

Welcome to our Fact Sheet on epilepsy during pregnancy. The information provided here is based on current research findings and may be updated as new scientific knowledge emerges. Remember, this content is not a substitute for personalized advice from healthcare professionals.

1. What Is Epilepsy and How to Recognize the Symptoms?

Epilepsy is a neurological condition that affects the brain’s electrical activity, causing repeated seizures.

Imagine your brain as a city with perfectly synchronized traffic lights controlling the flow of cars—these lights are like the electrical signals that make your thoughts and body function. With epilepsy, some of these lights malfunction, leading to a sudden surge or halt in electrical signals, like a “traffic jam.” This causes seizures, which can affect your awareness, provoke uncontrollable movements, or lead to unusual behaviors or falls.

Seizures vary greatly in type and intensity. Some are mild, such as brief moments of confusion or small muscle twitches, while others are more severe, involving convulsions. The symptoms of epilepsy differ from person to person. Here are some common signs of epilepsy:

  • Sudden confusion
  • Staring spells
  • Uncontrollable movements or stiffness of the arms and legs
  • Psychological symptoms like recurring hallucinations, feelings of déjà vu, or sudden unexplained fear
  • Loss of consciousness in some cases

These symptoms might be mild or severe and are determined by the location in the brain of the sudden electrical burst. Seizures can last from a few seconds to several minutes and don’t always involve visible convulsions; some may appear as brief periods of disorientation or staring. A person is diagnosed with epilepsy if they experience sudden seizures that happen repeatedly.

During pregnancy, hormonal and physiological changes can affect the brain’s electrical balance, sometimes increasing the frequency of seizures. Lack of sleep, stress, and changes in medication levels can also trigger more seizures, especially if you had frequent seizures before pregnancy.

Epilepsy can affect anyone, at any age. Rarely, a woman can experience her first seizure during pregnancy. This occurs in less than 1 out of 100 pregnancies and is caused by the changes in your body that can trigger symptoms that were previously absent or unnoticed.

If you notice any unusual episodes, such as unexplained confusion, memory lapses, or involuntary movements, it’s important to seek medical advice promptly.

2. Why Is It Important to Manage Epilepsy During Pregnancy?

Women with epilepsy can have healthy pregnancies, especially if the condition is controlled. In fact, with proper management, more than 9 out of 10 women with epilepsy can have successful pregnancies and good outcomes for both mother and baby.

The best chance of having a healthy pregnancy is to plan your pregnancy at least 1 year in advance. Effective management of your epilepsy – like keeping the ‘traffic lights’ in sync to prevent disruption – is key to ensuring the best possible outcome.

Uncontrolled seizures can significantly increase the risk of injury, premature labour and miscarriage. In addition, certain anti-seizure medications (ASMs) can increase the risk of birth defects and developmental problems if not carefully selected and monitored. If you suddenly find out that you are pregnant, you should contact your doctor immediately to see if your medication needs to be adjusted to take account of your new condition.

Miscarriage, congenital malformation “tooltip”, premature birth and other complications can occur in any pregnancy for many different reasons. This is known as the background risk. Here, we compare this background risk with the risks associated with taking the drug.

The table below provides a summary of the main risks associated with uncontrolled seizures during pregnancy compared to the background risk seen in women without epilepsy or with a stable condition. Remember, these risks are relative and can be influenced by factors like the mother’s age, genetics, ethnicity, lifestyle, and other medical conditions. Having an open conversation with your healthcare team can help you understand your personal risks and manage them effectively.

Table 1. Risks and challenges of unmanaged epilepsy during pregnancy.

For who? What? What does research say?
For the pregnant person

Seizures

 

Hormonal changes and adaptations during pregnancy can increase the frequency of seizures, in up to 1 out of 5 women with epilepsy, if not properly managed.

Injury from Seizures

Uncontrolled seizures increase the risk of injuries such as falls and trauma, which can lead to complications such as premature delivery or even stillbirth.

Pre-eclampsia

Small increase in the risk of developing pre-eclampsia “tooltip”.

For the unborn child

Congenital Malformations

Some anti-seizure medications, such as valproic acid, are associated with an increased risk of malformations, particularly neural tube “tooltip” defects.

Premature Birth

Small increase in risk (about 9 in 100 pregnancies) of premature birth (before 37 weeks) if seizures are not well controlled.

Growth

Uncontrolled seizures can cause fetal hypoxia “tooltip”, which can lead to growth retardation and low birth weight (less than 5 pounds 8 ounces [2,500 grammes]).

For future child/adult

Brain Development

Uncontrolled seizures may slightly increase the risk of cognitive and developmental delay.

More research is needed to confirm this risk.

For the family

Family Adjustments

Adapting to a new lifestyle with epilepsy can be difficult, but with family help, these demands can become more manageable.

Genetic Risk to Future Children

Fathers with epilepsy have a slightly higher risk of passing the condition to their children, but the overall risk remains relatively low.

These are group approximations; other factors such as your genetics, other medical conditions, and your lifestyle can vary your own risk.

3. Will I Be Able to Breastfeed?

Most women with epilepsy can safely breastfeed their babies. Breastfeeding has many benefits for both you and your baby, and in most cases, it is encouraged. While some anti-seizure medications (ASMs) do pass into breast milk, the amount is usually low and not likely to harm your baby and thus, considered compatible with breastfeeding.

Your healthcare team will help you weigh the benefits of breastfeeding against any potential risks, so you can make an informed decision to promote a safe experience for both mother and baby.

If you have any questions related to breastfeeding, don’t hesitate to talk with a doctor, pharmacist, midwife, or a lactation consultant.

4. What Can I Do to Manage my Epilepsy Other Than Medications?

Consider establishing an ‘epilepsy management’ plan with your partner and your healthcare team, just as you would for preparing for childbirth. You should do this either before your pregnant or early in the pregnancy. Identifying your seizure triggers early and discussing ways to manage them – especially fatigue and stress – can help you maintain your well-being throughout your pregnancy. This preparation allows you to quickly implement family support to avoid exhaustion.

While medications are the primary and most effective treatment for epilepsy, some people may also manage their seizures through lifestyle changes, dietary approaches, or other non-medication therapies. However, these alternatives might not be suitable for everyone and are often used in complement with medication, not as a replacement.

For some individuals, with mild epilepsy or specific seizure triggers, some techniques might help reduce seizure frequency including:

  • Stress-reduction techniques (e.g. mindfulness, meditation, yoga)
  • Adequate sleep
  • Ketogenic diet
  • Staying hydrated
  • Regular physical activity

Additionally, screening for anxiety  and depressive disorders,  which are frequently concomitant with epilepsy, is recommended during pregnancy and in the post-partum period. It can be easy to forget self-care during pregnancy, make sure to take time for yourself and take practical steps to prioritize both your health and well-being. 

Working closely with your healthcare provider before and throughout your pregnancy is essential to ensure the best possible outcomes for you and your baby. They will help to determine the best approach for your epilepsy. Most people with epilepsy require medication to fully control their seizures, and stopping or avoiding medication without medical guidance can lead to uncontrolled seizures, which can be dangerous.

5. Medications (ASMs) Prescribed for Managing Epilepsy

Medications are the most effective way to manage epilepsy by helping to control or reduce seizures. There are several types of anti-seizure medications (ASMs). The specific one prescribed to you depend on your type of epilepsy, seizure patterns, and personal factors like age and lifestyle, and response to previous treatment.

If you’re pregnant or planning to be, it’s important to discuss your treatment with your doctor. Seizures and ASMs can affect your baby early in pregnancy, sometimes before you even know you’re expecting. Your doctor will help you weigh the risks of seizures against the risks of taking medication.

During pregnancy, keep in mind:

  • Regular Monitoring: Close monitoring of drug levels is essential to adjust doses as needed for safety.
  • Treatment Changes: Any changes in treatment should carefully consider risks to the baby and benefits to you. Never stop or change ASMs without your specialist’s guidance.
  • Monotherapy: Using the lowest effective dose of one drug is preferred.
  • Folic Acid: Supplementation is recommended to reduce the risk of birth defects affecting the brain or spinal chord (neural tube defects).

Some ASMs are well-studied and safer during pregnancy, while newer ones may lack extensive research, making them less certain choices for pregnant women. In Canada, ASMs such as lamotrigine (Lamictal®), levetiracetam (Keppra®), and carbamazepine (e.g. Tegretol®) are commonly prescribed as they are well-tolerated and effective for many people and due to their relatively lower risk of major congenital malformations. In comparison, valproic acid (e.g. Depakene®) is usually avoided due to higher risks. Your healthcare provider will guide you in choosing the safest and most effective treatment. For more details on your medication, refer to its factsheet.

Table 2. Anti-seizure medications (ASMs) available in Canada.

Medication Types Medications Brand Names

First-Generation Anti-Seizure Medications

Carbamazepine

Tegretol®, Tegretol XR®, Carbatrol®

Clonazepam

Rivotril®

Diazepam

Valium®, Diastat®

Ethosuximide

Zarontin®

Phenobarbital

Luminal®

Phenytoin

Dilantin®

Primidone

Mysoline®

Valproic acid (Valproate)

Depakene®, Epival®

Second-Generation Anti-Seizure Medications

Gabapentin

Neurontin®

Lamotrigine

Lamictal®

Levetiracetam

Keppra®

Oxcarbazepine

Trileptal®

Pregabalin

Lyrica®

Topiramate

Topamax®

Vigabatrin

Sabril®

Third-Generations Anti-Seizure Medications

Brivaracetam

Brivlera®

Lacosamide

Vimpat®

Perampanel

Fycompa®

Rufinamide

Banzel®

Newer or Specialized Anti-Seizure Mediation

Cannabidiol (CBD)

Epidiolex®

Stiripentol

Diacomit®

*These medications are not all recommended during pregnancy. Check with your healthcare team before making any changes to your treatment.

It’s important to take your medication exactly as prescribed to ensure the best control of your seizures, especially during pregnancy. Regular follow-ups with your healthcare provider are essential because your medication dose may need adjustment. If you experience any concerns or issues, don’t hesitate to discuss them with your healthcare provider, who can help adjust your treatment plan to keep you and your baby safe, whether you’re pregnant or planning to become pregnant.

Key Takeaways

  • Epilepsy is a condition where the brain’s electrical signals do not work properly, causing seizures that vary in type and intensity.
  • During pregnancy, hormonal and physical changes can increase the frequency and severity of seizures, which is why regular medical follow-up is important.
  • If possible, planning a pregnancy at least one year in advance is highly recommended to adjust your treatment if necessary.
  • Pregnancy presents certain risks for you and your baby, including more frequent seizures, high blood pressure, and possible birth defects with some medications.
  • Medication adjustments may be necessary, ideally before pregnancy, with preferred options like lamotrigine (Lamictal®) and levetiracetam (Keppra®), while avoiding higher-risk medications such as valproic acid (Depakene®).
  • Good management of epilepsy and regular follow-up with your healthcare team can help ensure a healthy pregnancy for both you and your baby.

7. Research Is Great, But It Is Not Perfect

Making informed health decisions also involves considering the current state of scientific knowledge. Here are some research limits found by our committee of experts on the quantity and quality of studies on epilepsy during pregnancy:

  • Limited Large-Scale Studies: There aren’t many large, controlled studies on epilepsy during pregnancy because it’s difficult to conduct these kinds of studies ethically and safely with pregnant women.
  • Lack of Long-Term Follow-Up: Many studies focus only on the immediate outcomes of pregnancy, without tracking how children develop as they grow older.
  • Underreporting: Some studies rely on women’s own reports or incomplete medical records, which can miss important details about how often seizures happen or the effects of medications.
  • Diverse Populations: Research often includes women with different types of epilepsy and medications, making it hard to apply the findings to everyone. There’s also a need for more studies addressing cultural and socioeconomic differences.
  • Genetic Factors: Further research required to understand epilepsy genetic predispositions.
  • Psychological Impact: More studies needed on the emotional effects of epilepsy during pregnancy.

These limitations mean that while we know a lot, there’s still much to learn about how best to manage epilepsy during pregnancy.

References

  1. Beydoun, A., S. DuPont, D. Zhou, M. Matta, V. Nagire, and L. Lagae. “Current Role of Carbamazepine and Oxcarbazepine in the Management of Epilepsy.” Seizure, vol. 83, Dec. 2020, pp. 251-263. doi: 10.1016/j.seizure.2020.10.018.
  2. Błaszczyk, B., B. Miziak, R. Pluta, and S. J. Czuczwar. “Epilepsy in Pregnancy—Management Principles and Focus on Valproate.” International Journal of Molecular Sciences, vol. 23, no. 1369, Jan. 2022. doi: 10.3390/ijms23031369.
  3. “Épilepsie.” Epilepsie Québec. Accessed Aug. 13, 2024. https://www.epilepsiequebec.com/?page=l–x27-epilepsie–c–x27-est-quoi.
  4. “Epilepsy and Pregnancy.” Centre de Référence sur les Agents Tératogènes (CRAT). Accessed Aug. 13, 2024. https://www.lecrat.fr/7978/.
  5. “Epilepsy in Canada.” Canadian Epilepsy Alliance. Accessed Aug. 13, 2024. https://www.canadianepilepsyalliance.org/about-epilepsy/.
  6. “Epilepsy Overview.” Epilepsy Canada. Accessed Aug. 13, 2024. https://www.epilepsy.ca/what-is-epilepsy.
  7. “Epilepsy.” Government of Canada. Accessed Aug. 13, 2024. https://www.canada.ca/fr/services/sante/publications/maladies-et-affections/epilepsie.html.
  8. Li, Y., and K. J. Meador. “Epilepsy and Pregnancy.” CONTINUUM: Lifelong Learning in Neurology, vol. 28, Feb. 2022, pp. 34-54. doi: 10.1212/con.0000000000001056.
  9. Luef, G. “Female Issues in Epilepsy: A Critical Review.” Epilepsy & Behavior, vol. 15, May 2009, pp. 78-82. doi: 10.1016/j.yebeh.2009.02.023.
  10. McGrath, A., L. Sharpe, S. Lah, and K. Parratt. “Pregnancy-Related Knowledge and Information Needs of Women with Epilepsy: A Systematic Review.” Epilepsy & Behavior, vol. 31, Feb. 2014, pp. 246-255. doi: 10.1016/j.yebeh.2013.09.044.
  11. Pariente, G., T. Leibson, T. Shulman, T. Adams-Webber, E. Barzilay, and I. Nulman. “Pregnancy Outcomes Following In Utero Exposure to Lamotrigine: A Systematic Review and Meta-Analysis.” CNS Drugs, vol. 31, Apr. 2017, pp. 439-450. doi: 10.1007/s40263-017-0433-0.
  12. Pennell, P. B., et al. “Changes in Seizure Frequency and Antiepileptic Therapy during Pregnancy.” New England Journal of Medicine, vol. 383, Dec. 2020, pp. 2547-2556. doi: 10.1056/nejmoa2008663.
  13. Richmond, J. R., P. Krishnamoorthy, E. Andermann, and A. Benjamin. “Epilepsy and Pregnancy: An Obstetric Perspective.” American Journal of Obstetrics and Gynecology, vol. 190, no. 2, Feb. 2004, pp. 371-379. doi: 10.1016/j.ajog.2003.09.020.
  14. Stephen, L. J., C. Harden, T. Tomson, and M. J. Brodie. “Management of Epilepsy in Women.” The Lancet Neurology, vol. 18, no. 5, May 2019, pp. 481-491. doi: 10.1016/s1474-4422(18)30495-2.
  15. Tomson, T., and D. Battino. “Teratogenic Effects of Antiepileptic Drugs.” The Lancet Neurology, vol. 11, no. 9, Sep. 2012, pp. 803-813. doi: 10.1016/s1474-4422(12)70103-5.
  16. Tomson, T., et al. “Global Survey of Guidelines for the Management of Epilepsy in Pregnancy: A Report from the International League Against Epilepsy Task Force on Women and Pregnancy.” Epilepsia Open, vol. 5, Aug. 2020, pp. 366-370. doi: 10.1002/epi4.12420.
  17. “Management of Epilepsy during Preconception, Pregnancy, and the Postpartum Period.” UpToDate, Oct. 2023. Accessed Aug. 13, 2024. https://www.uptodate.com/contents/management-of-epilepsy-during-preconception-pregnancy-and-the-postpartum-period.
  18. Veiby, G., B. A. Engelsen, and N. E. Gilhus. “Early Child Development and Exposure to Antiepileptic Drugs Prenatally and Through Breastfeeding.” JAMA Neurology, vol. 70, no. 11, Nov. 2013, pp. 1367-1374. doi: 10.1001/jamaneurol.2013.4290.
  19. Viale, L., et al. “Epilepsy in Pregnancy and Reproductive Outcomes: A Systematic Review and Meta-Analysis.” The Lancet, vol. 386, Nov. 2015, pp. 1845-1852. doi: 10.1016/s0140-6736(15)00045-8.
URL copied!

Disclaimer

HEALTHY PREGNANCY HUB provides a source of information validated by health professionals; however, this information is provided for informational purposes only and should not replace professional advice. Medical standards and practices evolve as new data becomes available, so it is imperative to consult your doctor or a qualified health professional for any questions or concerns regarding your health without delay or omission. It is the responsibility of your treating physician or any other health professional, based on their independent experience and knowledge of the patient, to determine the best way to evaluate and treat you.

HEALTHY PREGNANCY HUB does not specifically recommend or endorse any test, practitioner, treatment, product, or opinion mentioned on our platform. HEALTHY PREGNANCY HUB also does not replace the individual patient assessment based on the examination by the healthcare provider of each patient and the consideration of laboratory data and other patient-specific factors.

The use of the information available on our site is at your own risk. No person involved in the creation, production, promotion, or marketing of HEALTHY PREGNANCY HUB guarantees or represents, expressly or implicitly, anything regarding the information available on the platform, which is provided “as it is”. All warranties are expressly excluded and disclaimed, including but not limited to implied warranties of merchantability or fitness for a particular purpose, as well as any warranties arising by law or otherwise in law or from trade or usage. Any statements or representations made by any other person or entity are void.

While consulting symptoms or other medical information on our platform may guide your discussions with your healthcare professional, this information should not be used to make a medical diagnosis or determine treatment. Before making changes to your supplement or medication regimen, please discuss with your medical team or contact 811 (Canada) to ensure the relevance of these changes to your individual situation.

Credits
Émy Roberge
Centre hospitalier universitaire Sainte-Justine
Catherine Lord
Immerscience Inc.
Jessica Gorgui
University of Montreal
R. Douglas Wilson
Université de Calgary
Modupe Tunde-Byass
University of Toronto
Anick Bérard
Centre hospitalier universitaire Sainte-Justine

Associated Fact Sheets

Would you like to know more about epilepsy and its associated medications ? Explore our associated fact sheets.

Ressources associées

You want to know more? Explore our associated ressources.

Partners

Your pregnancy during COVID-19
uOttawa
University of Calgary
University of British Columbia
University of Toronto
University of Saskatchewan
University of Manitoba
University of Alberta
Unity Health
Unité de soutien SSA
UDEM
Stratos
SOGC
SickKids
RQRM
QTNPR
QPC
PWHR
Public Health Agency of Canada
PregMed France
SPOR
MPrint
Mitacs
Médicaments Grossesse
McGill
Médicament Québec
FRQ
Perinatal Network
CIHR
IQVIA
iPOP
Institut national de santé publique du Québec
INRS
Innovative Medicines Canada
IN-uTERO
Immerscience
Groww
Enrich
Design Develop Discover
Dalla Lana
CUSM
CIHR
CHU Sainte-Justine
Centre of Excellence on Partnership with Patients and the Public
CAN-AIM
Canadian Pharmacogenomics Network for Drug Safetry
CAMCCO
CAMCCO-L
C4T
BORN Ontario
Black Physicians of Canada
BC Children's Hospital
Association of Faculties of Pharmacy of Canada
Alberta Health Services
MICYRN
UQAT
Dalhousie University