Roughly 3.4 million Americans live with epilepsy, including about 470,000 children, making it one of the most common neurological conditions in the country. About 1 in 26 people will develop epilepsy at some point in their lives, according to the CDC. The condition is far more diverse than the dramatic convulsions seen in movies — many seizures involve only brief lapses of awareness, isolated muscle jerks, or unusual sensations. With current treatments, seizures are fully controlled in roughly 70% of people, though access to specialized epilepsy care remains uneven.
This guide covers what epilepsy actually is, the major seizure types, how it is diagnosed, what to do during a seizure, and current treatment options. For broader context, see our medical conditions resource hub. It is educational and does not replace evaluation by a neurologist.
Seizure First Aid: What to Do in the Moment
Knowing what to do during a seizure protects the person and can save a life. The Epilepsy Foundation summarizes the basics as the “3 S’s” — Stay, Safe, Side:
- Stay with the person and stay calm. Time the seizure from the moment it starts.
- Keep them safe. Ease them to the floor, move away hard or sharp objects, and cushion the head with something soft. Loosen anything tight around the neck and remove glasses.
- Turn them on their side (the recovery position) once movements allow, to keep the airway clear.
Do not put anything in the person’s mouth — the old advice about someone “swallowing their tongue” is a myth, and objects in the mouth can break teeth or block breathing. Do not hold the person down or try to stop their movements. Stay with them, speaking calmly, until they are fully alert.
Call 911 immediately if: a convulsive seizure lasts longer than 5 minutes; a second seizure follows without the person recovering in between; breathing or consciousness does not return to normal; the person is injured, pregnant, has diabetes, or the seizure happens in water; or it is the person’s first known seizure. A seizure lasting more than 5 minutes, or repeated seizures without recovery, is called status epilepticus — a medical emergency that requires emergency treatment.
What Epilepsy Is
Epilepsy is a brain disorder defined by a lasting tendency toward recurrent unprovoked seizures. A single seizure does not by itself constitute epilepsy. Per the International League Against Epilepsy (ILAE), the diagnosis generally requires either two unprovoked seizures more than 24 hours apart, or one unprovoked seizure with a high recurrence risk (for example, an abnormal EEG together with a structural brain lesion).
According to the CDC, US prevalence is a little over 1%. Onset shows two peaks — early childhood and after age 65. Epilepsy in older adults is increasingly common as the population ages and as more people survive strokes, which are a leading cause of later-life seizures.
Seizure Types
The 2017 ILAE classification divides seizures into three main groups based on where they begin in the brain.
Focal seizures begin in one region of the brain and account for a large share of seizures in adults. Focal aware seizures (formerly “simple partial”) preserve consciousness; focal impaired-awareness seizures (formerly “complex partial”) disrupt it. Symptoms depend on where the seizure starts — a focal seizure in the motor cortex may cause limb jerking, while one in the temporal lobe may cause déjà vu, fear, a rising sensation in the stomach, or lip-smacking.
Generalized seizures involve both hemispheres from the start. Subtypes include tonic-clonic (the dramatic convulsion most associated with epilepsy), absence (brief staring spells, common in children), myoclonic (sudden muscle jerks), tonic, atonic (drop attacks), and clonic. Unknown-onset seizures describe events where the origin cannot be determined from the available clinical or test information.
Causes
Epilepsy has many causes, and in a large share of cases — often cited as roughly half — no specific cause is identified. Per NINDS and MedlinePlus, identifiable causes include genetic factors, structural brain abnormalities (stroke, tumor, traumatic brain injury, or malformations of cortical development), metabolic conditions, autoimmune encephalitis, and infections (including neurocysticercosis, a major cause worldwide).
In children, genetic and developmental causes predominate. In older adults, stroke is the leading cause, followed by neurodegenerative disease, head injury, and brain tumors. Specific epilepsy syndromes — such as childhood absence epilepsy, juvenile myoclonic epilepsy, and temporal lobe epilepsy — have characteristic ages of onset, seizure types, and treatment responses, which is one reason an accurate diagnosis matters so much.
Triggers in Established Epilepsy
Common triggers in people who already have epilepsy include sleep deprivation, missed medication doses, alcohol (particularly withdrawal), stress, illness or fever, hormonal changes (catamenial epilepsy), and flashing lights in the minority who are photosensitive. Identifying personal triggers and taking medication consistently are central to seizure control. A simple seizure diary can help you and your neurologist spot patterns.
Diagnosis
Diagnosis combines a careful clinical history, a neurologic examination, and testing. An EEG (electroencephalogram) records the brain’s electrical activity and may show characteristic abnormalities, though a single routine EEG can be normal in a substantial share of people with epilepsy. Sleep-deprived EEG, prolonged ambulatory EEG, and inpatient video-EEG monitoring increase the diagnostic yield.
MRI is the structural imaging study of choice and identifies underlying brain abnormalities in many cases. Per Mayo Clinic, a comprehensive workup may also include genetic testing, autoimmune antibody panels, metabolic studies, and, in selected cases, a lumbar puncture.
Differential diagnosis is important, because several conditions mimic seizures — including fainting (syncope), psychogenic non-epileptic seizures (PNES), TIA, migraine aura, panic attacks, and certain sleep disorders. PNES matters especially because it requires an entirely different treatment (psychological therapy rather than anti-seizure medication), and misdiagnosis is common.
Anti-Seizure Medications
More than 20 anti-seizure medications (ASMs, formerly called antiepileptic drugs) are available. Per Cleveland Clinic, roughly 70% of people achieve seizure freedom on medication, and most who respond do so on the first or second drug tried.
The choice of medication depends on seizure type, epilepsy syndrome, age, sex, other medical conditions, and side-effect profile — which is why prescribing is individualized and best directed by a clinician. Commonly used agents include lamotrigine, levetiracetam, valproate, carbamazepine, oxcarbazepine, and lacosamide, while newer options such as brivaracetam, perampanel, cenobamate, and eslicarbazepine expand the choices for harder-to-treat epilepsy. Valproate carries known risks in pregnancy and is generally avoided in people who may become pregnant unless there is no suitable alternative. Because dosing must be tailored to the individual, this article does not list specific doses; your prescriber will set and adjust yours.
A critical safety point: never stop or abruptly change an anti-seizure medication on your own. Suddenly stopping an ASM — even because you feel well, ran out, or dislike a side effect — can trigger severe breakthrough seizures or status epilepticus. If a medication is not working or is causing problems, contact your prescriber, who can adjust or switch drugs safely, usually by tapering. Consistent adherence is one of the most powerful things you can do to stay seizure-free.
As a rough guide to cost, older generic ASMs often run about $10–$80 per month, while newer brand-name medications can run $200–$1,500 per month; actual prices vary widely by insurance, pharmacy, and discount programs, so verify current pricing for your specific drug.
Drug-Resistant Epilepsy
About 30% of people have drug-resistant (refractory) epilepsy, defined as continued seizures despite adequate trials of two appropriately chosen ASMs. These patients warrant referral to a comprehensive (Level 4) epilepsy center for advanced evaluation. Options include:
Resective surgery — removing the seizure focus — can produce seizure freedom in a majority of carefully selected temporal-lobe epilepsy patients. Laser interstitial thermal therapy (laser ablation) is a less invasive alternative for selected lesions. Neuromodulation devices include vagus nerve stimulation (VNS), responsive neurostimulation (RNS), and deep brain stimulation (DBS), each suited to different patient profiles. Dietary therapy — the ketogenic diet, modified Atkins diet, or low-glycemic-index treatment — helps a meaningful share of people with refractory epilepsy, especially children, and must be supervised by a medical team. Cannabidiol (Epidiolex) has FDA approval for several severe epilepsy syndromes, including Dravet syndrome, Lennox-Gastaut syndrome, and tuberous sclerosis complex.
Living with Epilepsy
Driving laws vary by state. Most states require a seizure-free interval (commonly in the range of 3 to 12 months) before driving resumes, and a few require clinicians to report seizures. Because the rules differ significantly, check your own state’s requirements and discuss them honestly with your neurologist. Employment, education, and most recreational activities can usually continue with good seizure control, alongside sensible safety steps such as not swimming alone, using caution around stoves and heights, and — for some people — showering rather than bathing.
SUDEP (sudden unexpected death in epilepsy) is uncommon but real, and it deserves an honest conversation rather than silence. It is estimated to affect on the order of 1 in 1,000 people with epilepsy each year, with the risk concentrated in those who have frequent generalized tonic-clonic seizures, especially at night. The most effective way to lower the risk is good seizure control through consistent medication use; other measures may include nighttime supervision or seizure-detection devices in higher-risk cases. Ask your neurologist whether SUDEP applies to your situation and what you can do about it. Depression and anxiety disorders are common alongside epilepsy and deserve treatment in their own right.
When to See a Doctor
Any first seizure warrants prompt medical evaluation. Recurrent seizures, breakthrough seizures despite medication, troublesome side effects, or planning a pregnancy while on ASMs all call for specialist input. Most people benefit from at least an initial neurology evaluation, and Level 4 epilepsy centers handle complex and drug-resistant cases.
The Epilepsy Foundation operates a 24/7 Helpline (1-800-332-1000; please verify the current number) offering support, education, and local resources. Most epilepsy care is covered by insurance, though specialty drugs and advanced procedures may require prior authorization. Telehealth has expanded routine epilepsy follow-up, though video-EEG and surgical evaluations remain in person.
Frequently Asked Questions
What should I do if someone is having a seizure?
Remember Stay, Safe, Side: stay with the person and time the seizure, keep them safe by easing them down and cushioning the head, and turn them on their side once movements allow. Remove glasses, loosen tight neckwear, and clear away hard objects. Do not put anything in the mouth. Call 911 if the seizure lasts longer than 5 minutes, repeats without recovery, or the person is injured, pregnant, in water, or having a first-ever seizure.
Can epilepsy be cured?
Many people do very well: roughly 70% achieve seizure freedom on medication, and some can eventually taper off — always under a neurologist’s guidance, never on their own — after years of control. Surgery can be curative in selected patients, particularly with temporal-lobe epilepsy, and some childhood syndromes resolve with age. For most people, epilepsy is highly manageable.
Are seizures dangerous?
Most individual seizures cause no lasting harm, but injuries during seizures and prolonged seizures (status epilepticus) can be dangerous, and SUDEP is a rare but serious complication — especially with frequent generalized tonic-clonic seizures. Good seizure control reduces all of these risks.
Can stress cause seizures?
Stress is a recognized trigger in some people with established epilepsy, though it does not cause epilepsy itself. Sleep deprivation, missed medications, illness, and alcohol are often more significant triggers. Stress management is a reasonable part of overall epilepsy care.
The Bottom Line
Epilepsy is a treatable condition, and seizure freedom is achievable for most people. The first step is an accurate diagnosis that distinguishes epilepsy from mimics such as syncope or psychogenic events. Medication is the cornerstone of treatment — taken consistently and never stopped abruptly on your own — and anyone whose seizures persist after two appropriate medications deserves referral to a comprehensive epilepsy center to consider surgery, devices, dietary therapy, or other options. Knowing simple seizure first aid, recognizing when a seizure becomes an emergency, and having an honest conversation with your neurologist about SUDEP and driving all help people with epilepsy live full, safe lives.
TL;DR: Epilepsy is a tendency toward recurrent unprovoked seizures, and about 70% of people become seizure-free with treatment. If you witness a seizure: Stay, keep them Safe, turn them on their Side, time it, and put nothing in the mouth. Call 911 if a convulsive seizure lasts longer than 5 minutes or repeats without recovery (status epilepticus). Anti-seizure medications are prescriber-directed — never stop them abruptly, because withdrawal can trigger dangerous seizures. Drug-resistant epilepsy warrants an epilepsy center for surgery, VNS/RNS/DBS, or diet therapy. Ask your neurologist about SUDEP and your state’s driving rules.
This article is for general education only and is not medical advice. It does not replace a neurologist, and treatment must be individualized. Dosing is intentionally not provided; your prescriber will set it. If a seizure lasts over 5 minutes or repeats, call 911.
Sources
- Epilepsy Foundation — Seizure first aid (“Stay, Safe, Side”), 24/7 Helpline, and SUDEP resources
- MedlinePlus — Epilepsy
- NINDS — Epilepsy and Seizures
- CDC — Epilepsy fast facts and data
- American Academy of Neurology (AAN) — epilepsy diagnosis and management guidance
- Mayo Clinic — Epilepsy diagnosis and treatment; Cleveland Clinic — Epilepsy; International League Against Epilepsy (ILAE) 2017 seizure classification