Treatment of epilepsy
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NICE epilepsy guideline antiseizure medication treatment adults children 2025
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Treatment of epilepsy
Treatment is individualized according to seizure type, epilepsy syndrome, age, comorbidities, pregnancy potential, and patient preference. A neurologist should guide long-term treatment, especially if seizures persist or multiple drugs are needed.
1. Confirm the diagnosis and classify the seizure
Before choosing a medicine, establish whether seizures are:
- Focal onset
- Generalized onset: absence, myoclonic, generalized tonic-clonic, atonic, etc.
- Unknown onset
An EEG, brain imaging when indicated, and review for reversible triggers are commonly part of assessment.
2. Address reversible causes and safety
Treat or avoid precipitants such as sleep deprivation, alcohol or recreational drugs, missed medicines, fever or metabolic problems.
Safety measures:
- Take antiseizure medication consistently.
- Avoid swimming, bathing alone, heights, open flames, and operating machinery until seizure control and local driving rules permit.
- Maintain regular sleep and limit alcohol.
- Teach family seizure first aid: protect from injury, place on the side after convulsions, time the seizure, do not restrain or put anything in the mouth.
Emergency help is needed if a convulsive seizure lasts 5 minutes or longer, seizures recur without full recovery, there is injury, breathing difficulty, pregnancy, or it is a first seizure.
3. Antiseizure medication
Medication is usually started after epilepsy is diagnosed, or after a first unprovoked seizure when recurrence risk is high. Prefer single-drug treatment initially, started low and increased gradually.
| Seizure type | Common first-line options* |
|---|---|
| Focal seizures | Lamotrigine, levetiracetam, carbamazepine, oxcarbazepine |
| Generalized tonic-clonic seizures | Valproate, lamotrigine, levetiracetam |
| Absence seizures | Ethosuximide; valproate if generalized tonic-clonic seizures also occur |
| Myoclonic seizures | Valproate, levetiracetam, lamotrigine with caution |
| Atonic or complex developmental epilepsies | Specialist-directed treatment, often with syndrome-specific combinations |
*Choice varies by person and local guidance.
Important cautions:
- Valproate is highly effective for several generalized epilepsies but can cause major fetal harm. It should generally be avoided in women and girls who may become pregnant unless no suitable alternative exists and strict pregnancy-prevention and specialist counseling are in place.
- Some drugs can worsen certain generalized epilepsies. Carbamazepine and oxcarbazepine may aggravate absence or myoclonic seizures.
- Do not stop antiseizure medicine abruptly unless medically directed, because withdrawal may provoke seizures or status epilepticus.
Common adverse effects differ by medicine: dizziness, fatigue, mood or behavioral changes, rash, weight change, tremor, and effects on liver, blood counts, bone health, or drug interactions. A serious rash, facial swelling, fever, jaundice, suicidal thoughts, or marked behavioral change needs urgent medical review.
4. If seizures continue
If the first appropriate medicine is ineffective or not tolerated:
- Reconfirm seizure type, diagnosis, adherence, and triggers.
- Try another suitable single medicine.
- Consider rational combination therapy under specialist care.
About half of patients who achieve remission do so with the first antiseizure medicine. Persistent seizures despite trials of two appropriately selected and tolerated antiseizure medication schedules is generally considered drug-resistant epilepsy.
5. Drug-resistant epilepsy
Refer promptly to a specialist epilepsy center for:
- Video-EEG monitoring and high-resolution MRI
- Assessment for epilepsy surgery, particularly for focal epilepsy with a removable seizure focus
- Neurostimulation such as vagus nerve stimulation, responsive neurostimulation, or deep brain stimulation in selected patients
- Dietary therapy, especially a ketogenic diet or modified Atkins diet, most often in children but sometimes adults
- Psychological, social, cognitive, and occupational support
Surgery can be highly effective in carefully selected focal epilepsy, especially temporal-lobe epilepsy.
6. Rescue treatment for prolonged seizures
A personalized rescue plan may include a benzodiazepine, such as buccal/intranasal midazolam or rectal diazepam, prescribed for seizure clusters or prolonged convulsive seizures. Hospital treatment for convulsive status epilepticus begins with rapid benzodiazepine administration followed by longer-acting antiseizure treatment and treatment of the cause.
7. Pregnancy and contraception
Pre-pregnancy counseling is important. Aim for seizure control with the safest effective single medicine at the lowest effective dose. Do not discontinue medication on discovering pregnancy without urgent specialist advice, since uncontrolled tonic-clonic seizures can harm both parent and fetus. Folic acid and medication-level monitoring may be recommended.
8. Considering stopping treatment
Withdrawal may be considered only after a sustained seizure-free period, often at least 2 years, after an individualized discussion of relapse risk, seizure type, EEG, driving implications, and lifestyle. Taper gradually under specialist supervision.
Recent evidence includes a 2025 systematic review on adjunctive therapy for pediatric focal epilepsy (PMID 39948216); its findings apply specifically to children with focal epilepsy and should not be generalized to all epilepsy types.
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