HOW IS EPILEPSY TREATED?
Epilepsy treatment is individual.
There is no single medicine, operation, diet or device that is right for everyone, because epilepsy is not one condition and seizures do not all respond to the same treatments.
For many people, treatment begins with an antiseizure medication — ASM. Other people may eventually need a combination of treatments, which can include:
different or additional antiseizure medicines
epilepsy surgery
neurostimulation
ketogenic dietary therapy
treatment directed at an underlying cause
rescue medication for particular seizure emergencies or clusters
and management of health, safety and quality-of-life issues associated with epilepsy.
WHO estimates that up to 70% of people with epilepsy could become seizure-free with appropriate use of antiseizure medicines. However, treatment access and outcomes vary considerably around the world.
The goal is not simply:
“Give everyone with epilepsy a seizure medicine.”
It is to build a treatment strategy around the person's particular epilepsy.
What is treatment trying to achieve?
The ideal aim is complete seizure freedom without unacceptable adverse effects.
That is not always achievable, so treatment may also aim to:
reduce how often seizures occur
reduce seizure severity or duration
prevent progression to more dangerous seizure types
reduce clusters and prolonged seizures
reduce seizure-related injuries
lower epilepsy-related risks
minimise medication adverse effects
protect cognition, development and mental health
improve independence
and improve quality of life.
This means two people who experience a similar number of seizures may still need very different treatment plans.
Treatment decisions should consider not only seizure frequency, but also what the seizures actually do to the person's life.
Antiseizure medication
For most people who require ongoing treatment, antiseizure medication is the main treatment.
These medicines reduce the likelihood that seizures will occur, although they do not all work in the same way.
The medicine chosen depends on factors including:
seizure type
epilepsy type
epilepsy syndrome
age
sex
other medical conditions
other medicines
potential interactions
likely adverse effects
pregnancy or pregnancy potential
lifestyle and individual circumstances
and, in some cases, the underlying cause of the epilepsy.
International and national recommendations differ in some details, but modern epilepsy treatment consistently emphasises selecting medication according to the type of epilepsy and the individual, rather than treating every seizure with the same drug. WHO publishes separate recommendations for different seizure types, while national guidelines provide more detailed prescribing pathways.
Related Information Hub pages:
Antiseizure Medicines — What They Actually Do
How Doctors Choose an Epilepsy Medicine
Why identifying the seizure type matters
Antiseizure medicines have different effectiveness profiles.
A medicine that is useful for one type of seizure may be:
less effective for another
unsuitable for a particular epilepsy syndrome
or capable of worsening certain seizure types.
This is one reason accurate epilepsy classification matters before and during treatment.
Treatment may therefore change if later investigation shows that the original classification was incomplete or incorrect.
Related Information Hub page:
Focal, Generalised, Unknown and Unclassified Seizures — Understanding the 2025 ILAE Classification
Starting with one medicine
When possible, epilepsy treatment commonly begins with one antiseizure medicine, known as monotherapy.
The dose is usually adjusted according to:
response
tolerability
age
other medicines
and individual clinical circumstances.
If the first medicine does not provide adequate seizure control or causes unacceptable adverse effects, another medicine may be tried.
Some people eventually require two or more medicines together, known as combination or add-on therapy.
More medication is not automatically better.
Each additional treatment has to be balanced against the possibility of:
adverse effects
interactions
cognitive effects
sedation
and treatment burden.
Planned related Information Hub page:
Monotherapy vs Combination Therapy
Side effects are part of treatment decisions
Reducing seizures is important, but seizure control cannot be considered in isolation.
Antiseizure medicines can cause adverse effects including, depending on the individual medicine:
tiredness
dizziness
problems with balance
cognitive or memory difficulties
mood or behavioural changes
gastrointestinal symptoms
weight changes
skin reactions
and other effects.
Some adverse reactions are mild and improve with time.
Others require medical review.
Rare reactions can be serious.
This is why treatment should be judged by both:
How well is it controlling the epilepsy?
and:
What effect is the treatment itself having on the person?
Planned related Information Hub page:
Antiseizure Medication Side Effects
Pregnancy and reproductive considerations
Some antiseizure medicines can affect a developing baby during pregnancy, while uncontrolled seizures can also carry risks.
Treatment therefore sometimes has to take account of:
pregnancy potential
contraception
pregnancy planning
pregnancy itself
breastfeeding
and the risks associated with particular medicines.
The rules and regulatory restrictions surrounding certain antiseizure medicines differ between countries.
For example, WHO recommends avoiding valproic acid as first-line treatment for women and girls of childbearing potential because of the risk of congenital malformations and neurodevelopmental effects following exposure during pregnancy. Some countries apply additional regulatory precautions to valproate and other medicines.
Medication should not be suddenly stopped because of pregnancy or concern about pregnancy without appropriate medical advice. Abrupt withdrawal can cause seizures and, in some circumstances, serious seizure emergencies.
Related Information Hub pages:
Contraception and Epilepsy
Pregnancy and Epilepsy
Labour, Birth and Epilepsy
After the Baby Is Born: Epilepsy, Breastfeeding, Sleep and Baby Safety
What happens when medicines do not stop the seizures?
Some people continue to have seizures despite trying appropriate antiseizure medicines.
The ILAE uses the term drug-resistant epilepsy when there has been failure of two tolerated, appropriately chosen and adequately used antiseizure medication schedules to achieve sustained seizure freedom.
Drug resistance does not mean:
nothing more can be done
every medicine has failed
surgery is automatically possible
or the epilepsy is untreatable.
It means the treatment pathway should usually change.
Continuing to cycle through medicines indefinitely without reconsidering the diagnosis and other treatment possibilities can delay therapies that may be more appropriate.
Related Information Hub page:
Drug-Resistant Epilepsy — What It Actually Means
Re-evaluating the epilepsy
Before deciding that seizures are genuinely drug-resistant, specialists may reconsider:
whether all the events are epileptic seizures
whether the seizure and epilepsy type are correctly classified
whether the medicines used were appropriate
whether doses and treatment duration were adequate
medication adherence
interactions with other medicines
whether more than one type of event is occurring
and whether a structural or other treatable cause has been identified.
This reassessment is important because apparent treatment failure can sometimes have another explanation.
Related Information Hub pages:
Second Opinions and Re-evaluating an Epilepsy Diagnosis
Why Epilepsy Tests Sometimes Disagree
Epilepsy surgery
For some people with drug-resistant epilepsy, epilepsy surgery may offer the best chance of seizure freedom or major seizure reduction.
Surgery is particularly relevant when seizures arise from a brain region that can potentially be treated without causing unacceptable neurological harm.
Surgical treatment is not limited to simply “removing the part causing seizures”. Different procedures can:
remove epileptogenic tissue
disconnect seizure pathways
destroy carefully targeted tissue
or use other approaches depending on the epilepsy.
The ILAE Surgical Therapies Commission recommends that people with established drug-resistant epilepsy should be considered for timely referral for surgical evaluation, rather than surgery being regarded only as a last resort after many additional years of seizures.
Being referred for assessment does not mean somebody will necessarily have an operation.
It means specialists investigate whether surgery is:
possible
likely to help
and acceptably safe.
Planned related Information Hub pages:
Epilepsy Surgery — Who Might Be Considered?
Types of Epilepsy Surgery
What Happens Before, During and After Epilepsy Surgery
Surgery assessment can involve many different tests
Presurgical assessment may combine information from:
seizure history
video EEG
MRI
neuropsychological testing
PET
SPECT
MEG
functional MRI
and, in selected cases, intracranial EEG such as stereo-EEG.
These investigations are already covered individually elsewhere in the Information Hub and are not repeated here.
The important principle is that specialists look for concordance between different forms of evidence before recommending a procedure.
Neurostimulation
When seizures cannot be adequately controlled with medication and removing or destroying the epileptogenic brain region is not appropriate, neurostimulation may be considered in selected people.
Neurostimulation uses electrical stimulation to modify brain networks involved in seizures.
Depending on the country and individual circumstances, approaches can include:
vagus nerve stimulation — VNS
deep brain stimulation — DBS
responsive neurostimulation — RNS
and developing forms of closed-loop stimulation.
These treatments are not interchangeable.
They stimulate different parts of the nervous system and have different indications, evidence bases and availability.
Some technologies are routinely available in certain countries while remaining unavailable, restricted or investigational elsewhere.
Vagus nerve stimulation — VNS
VNS uses an implanted device to provide electrical stimulation through the vagus nerve.
It is generally considered for people whose epilepsy has not been adequately controlled with medication, particularly when resective epilepsy surgery is unsuitable or has not been successful.
NICE, for example, describes VNS as a treatment considered alongside antiseizure medication when resective surgery is unsuitable, while recognising that the evidence and patterns of use continue to evolve.
The aim is often seizure reduction rather than guaranteed seizure freedom.
Planned related Information Hub page:
Vagus Nerve Stimulation — VNS
DBS and responsive neurostimulation
Other implanted devices can stimulate structures within the brain itself.
Deep brain stimulation — DBS provides programmed stimulation to selected brain targets.
Responsive neurostimulation — RNS is a closed-loop approach that can detect particular patterns of brain activity and respond with stimulation.
Eligibility, regulatory approval and availability vary substantially between countries.
These treatments require specialist assessment and should not be presented as universal alternatives available to everybody with drug-resistant epilepsy.
Planned related Information Hub pages:
Deep Brain Stimulation — DBS
Responsive and Closed-Loop Neurostimulation — RNS and Related Systems
Ketogenic dietary therapies
Ketogenic dietary therapies use carefully controlled changes in the proportions of:
fat
carbohydrate
and protein
to alter the body's metabolism.
They are established treatments for certain epilepsy syndromes and metabolic disorders and may also be considered for some people with drug-resistant epilepsy.
They are medical dietary treatments, not simply a low-carbohydrate diet someone should start independently.
Specialist supervision is important because ketogenic therapies can affect:
nutrition
growth
gastrointestinal health
kidney stone risk
blood lipids
and other aspects of health.
NICE recommends specialist-supervised ketogenic dietary therapy for several particular childhood epilepsies and metabolic conditions, and says it may also be considered in drug-resistant epilepsy when other treatments have been unsuccessful or are inappropriate.
Planned related Information Hub page:
Ketogenic Dietary Therapies
Treating the underlying cause
Sometimes epilepsy treatment involves more than suppressing seizures.
If an underlying condition is identified, treatment may also target the cause itself.
Examples can include selected:
immune-mediated disorders
infections
metabolic diseases
structural lesions
and tumours.
In some metabolic epilepsies, identifying the specific disorder can lead to highly targeted treatment.
In some immune-mediated diseases, treatment of the immune process can be an important part of seizure management.
In selected structural epilepsies, treating or removing the responsible lesion may offer possibilities that antiseizure medicine alone cannot provide.
This is one reason determining why the epilepsy developed can matter.
Related Information Hub page:
What Causes Epilepsy?
Rescue medication
Some people are prescribed rescue medication for particular seizure emergencies.
It may be used according to an individual emergency plan for situations such as:
prolonged seizures
particular seizure clusters
or other clearly defined circumstances.
The medicine, route of administration, timing and rules for repeat doses vary between:
individuals
ages
healthcare systems
and countries.
Rescue medication is therefore not something that should be copied from another person's epilepsy plan.
Related Information Hub page:
Seizure Clusters and Rescue Medication
Emergency treatment is different from everyday treatment
Treatment used every day to reduce future seizures is different from treatment given during an emergency.
Status epilepticus requires urgent medical treatment.
The medicines and escalation pathway used in hospital are designed to stop ongoing seizure activity and protect the brain and body from prolonged seizures.
That emergency pathway is covered separately.
Related Information Hub page:
Status Epilepticus — When a Seizure Becomes a Medical Emergency
Lifestyle is part of management — but it is not a replacement for epilepsy treatment
Sleep, medication routines, alcohol, illness, stress and other factors can influence seizure likelihood in some people.
Managing individual seizure triggers can therefore be useful.
But advice such as:
“sleep better”
“avoid stress”
or:
“stay positive”
is not a substitute for evidence-based epilepsy treatment.
A trigger affects the likelihood of a seizure occurring.
It does not necessarily explain or remove the underlying epilepsy.
Related Information Hub page:
Seizure Triggers vs Seizure Causes — What's the Difference?
Treatment also includes health beyond seizures
Modern epilepsy care should consider more than seizure counts.
Depending on the individual, clinicians may also need to address:
memory and cognition
sleep
anxiety and depression
medication adverse effects
injuries
bone health
reproductive health
learning and development
employment or education
relationships
driving
independence
and safety.
Some of these issues arise from epilepsy itself.
Others may be associated with:
medication
an underlying neurological condition
disrupted sleep
repeated seizures
or the wider social effects of living with epilepsy.
These areas have their own Information Hub articles so they do not need to be reproduced within every treatment page.
Treatment can change over time
The treatment that is appropriate today may not be the treatment somebody needs throughout life.
Treatment may change because:
seizures change
a new seizure type appears
a syndrome becomes clearer
adverse effects emerge
another health condition develops
pregnancy is being considered
a new cause is identified
seizures become drug-resistant
new treatments become available
or prolonged seizure freedom leads to discussion about whether medication is still required.
Regular review is therefore part of epilepsy treatment.
Can antiseizure medication ever be stopped?
For some people who have remained seizure-free, reducing or stopping medication may eventually be considered.
This is an individual risk–benefit decision.
WHO notes that discontinuation may be considered after a period of seizure freedom, while factors associated with recurrence risk need to be considered.
National guidelines differ in the exact process.
Factors may include:
epilepsy syndrome
underlying cause
seizure history
EEG findings
duration of seizure freedom
consequences of another seizure
occupation or driving
pregnancy considerations
and the person's preferences.
Medication reduction should normally be planned gradually with an appropriate clinician.
Suddenly stopping an antiseizure medicine can provoke seizures and, depending on the medicine and circumstances, may be dangerous.
Planned related Information Hub page:
Stopping or Reducing Antiseizure Medication
Treatment success is not always all or nothing
Seizure freedom is the ideal outcome, but treatment can sometimes provide meaningful benefit without eliminating every seizure.
For example, treatment may:
reduce seizures from many each week to occasional events
prevent seizures progressing into bilateral tonic–clonic seizures
shorten recovery
reduce seizure clusters
reduce injuries
or substantially improve everyday functioning.
Those improvements matter.
At the same time, continued seizures should not automatically be accepted as the end of the treatment pathway, particularly after two appropriately chosen medication schedules have failed.
That is when specialist reassessment becomes especially important.
Planned related Information Hub page:
When Treatment Reduces Seizure Severity but Does Not Stop Seizures
Treatment is not equally accessible worldwide
The science of epilepsy treatment cannot be separated from access to healthcare.
WHO reports that around three quarters of people with epilepsy in low-income countries may not receive the treatment they need.
Availability of generic antiseizure medicines in public healthcare systems in many low- and middle-income countries also remains limited.
Access to:
epilepsy specialists
EEG
MRI
genetic testing
surgery
dietary therapy
neurostimulation
and emergency medication
also varies enormously.
A treatment being medically possible does not mean it is realistically available everywhere.
That global treatment gap remains one of the major challenges in epilepsy care.
There is no single epilepsy treatment pathway
One person might:
begin an antiseizure medicine → become seizure-free → remain well on that treatment.
Another might:
try one medicine → change because of adverse effects → become seizure-free on another.
Another might:
try two appropriate medicines → continue having seizures → be referred to a specialist epilepsy centre → undergo presurgical assessment → have epilepsy surgery.
Someone else may not be suitable for resective surgery and instead use a combination of:
medication + neurostimulation + rescue medication + safety planning.
Another person may have an epilepsy in which:
dietary or cause-specific treatment is particularly important.
All of these can be legitimate epilepsy treatment pathways.
The most important message
Epilepsy treatment is individualised.
For most people requiring ongoing therapy, antiseizure medication is the starting point, and WHO estimates that appropriate medication could enable up to 70% of people with epilepsy to become seizure-free.
But medication is not the whole of epilepsy treatment.
Depending on the individual, treatment can also include:
epilepsy surgery
VNS, DBS, RNS or other neurostimulation
ketogenic dietary therapies
treatment of an underlying disease
rescue medication
and management of the wider physical, cognitive and psychological effects of epilepsy.
When two appropriately chosen and tolerated medication schedules have failed to achieve sustained seizure freedom, drug-resistant epilepsy should be recognised and other treatment possibilities considered rather than simply assuming nothing more can be done. Timely surgical evaluation is specifically supported by ILAE expert consensus for people with drug-resistant epilepsy.
Treatment should therefore ask more than:
“How many seizures are happening?”
It should also ask:
Is this treatment controlling the epilepsy as well as it reasonably can?
What is it costing the person in adverse effects?
Are there other treatments that should now be considered?
And what outcome matters most to the person living with it?
Sources and further reading
World Health Organization — Epilepsy
Current global overview of epilepsy treatment, medication access and the international treatment gap. WHO reports that up to 70% of people with epilepsy could become seizure-free with appropriate use of antiseizure medication.
World Health Organization — Antiseizure medicines for management of epilepsy in adults and children
International recommendations addressing first-line antiseizure medication for different seizure types and important reproductive-safety considerations.
International League Against Epilepsy — Surgical Therapies Commission: Timing of referral to evaluate for epilepsy surgery
International expert consensus recommending timely surgical evaluation when drug-resistant epilepsy has been established.
NICE NG217 — Epilepsies in children, young people and adults
Detailed evidence-based guidance covering individualised antiseizure treatment, ketogenic dietary therapy, epilepsy surgery and vagus nerve stimulation. This is UK guidance and prescribing recommendations should not be assumed to apply identically in other countries.
Information reviewed: September 2026.
This page provides general educational information for an international audience. Available medicines, licensing, neurostimulation technologies, dietary services, surgical programmes and prescribing rules vary between countries. Treatment should be individualised with an appropriately qualified healthcare professional. Antiseizure medication should not be stopped or changed suddenly without medical advice.
