Illustration of epilepsy
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What Is Epilepsy?

It's a problem with your brain’s electrical system. A surge of electrical impulses causes brief changes in movement, behavior, feeling, or awareness. These events, known as seizures, last from a few seconds to a few minutes. People who've had two or more seizures without obvious triggers at least 24 hours apart have epilepsy.

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Brain scan and convulsion waves
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What Are the Symptoms?

Epilepsy can cause convulsions -- sudden, uncontrolled movements. But seizures can trigger a wide range of other symptoms, from staring to falling to fumbling with clothes. Most doctors divide them into different types, according to how they affect your brain. Each has its own set of symptoms.

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Child staring into space
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Absence Seizures

These are often described as staring spells. The person stops what they’re doing, stares into space for a few seconds, then goes on like nothing happened. It’s most common in children and usually starts between the ages of 4 and 12. Some kids have as many as 100 absence seizures in 1 day.

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Person having a tonic clonic seizure
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Generalized Tonic-Clonic Seizures

These used to be called grand mal seizures, and they’re the most easily spotted. Your arms and legs stiffen, then begin to jerk. This can last up to 3 minutes. After it happens, you’ll probably be tired and confused. This type of seizure involves many areas of the brain.

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Man having a partial seizure
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Focal Onset Seizures

Also called partial seizures, these start in one part of your brain. You might make jerking motions or see things that aren’t there, but still be aware of what’s happening. If you have a complex partial seizure, you might wander, mumble, smack your lips, or fumble with your clothes. Others might think you’re conscious, but you won’t be aware of what you’re doing.

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Image of brain and electrical movement
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What Causes Epilepsy?

Anything that disrupts the brain’s natural circuitry can bring on this disorder:

  • Genes
  • A change in the structure of your brain
  • Severe head injury
  • Brain infection or disease
  • Stroke
  • Lack of oxygen

Most people with epilepsy never find a specific cause.

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Children raising hands in class
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Do Kids Get Epilepsy?

Yes, but some outgrow it in a few years. Regular medication often stops it. If drugs alone don't keep it under control, other treatments may help. A well-informed school staff can help a child with epilepsy safely take part in most activities.

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Man undergoing epilepsy scan
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Diagnosis: EEG

A doctor will review the description of your seizures and your medical history, then examine you. They'll give you a test called an electroencephalogram (EEG) to confirm a diagnosis and get more information about your seizures. It’s a painless procedure that records your brain’s electrical activity as wavy lines. The pattern changes during a seizure and may show which part of the brain is affected. That can help guide your treatment.

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Brain scan showing partial epilepsy
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Diagnosis: Brain Scan

Detailed images of your brain from tests like CT or MRI scans can help doctors rule out some things as causes, like a change in the structure of your brain, bleeding, or masses. A CT scan is a powerful type of X-ray, and an MRI uses magnets and radio waves to make pictures. This information will help your doctor come up with the best treatment plan for you.

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Man walking up stairs
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Epilepsy Complications

The best way to avoid them is to find a treatment that helps you, and stick with it. Most people with the brain disorder live a long time, and they're rarely injured during seizures. But if you fall during them, you may need a helmet to protect your head. Some types of seizures may make an early death more likely, but this is rare.

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underwater shot of swimmer in pool
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Safety Measures

Because seizures often strike without warning, some activities are dangerous. Losing consciousness while swimming or taking a bath could be life-threatening. The same goes for many extreme sports, like mountain climbing. Most states require you to be seizure-free for a certain amount of time before driving a car.

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Woman about to take pill
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Treatment: Medication

Anti-seizure drugs are the most common epilepsy treatment. If a medication doesn’t work, your doctor may adjust the dose or prescribe a different drug for you. About two-thirds of people with the brain disorder become seizure-free by taking their meds as prescribed.

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Ketogenic diet for epilepsy
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Treatment: Ketogenic Diet

If medications don't work, a doctor may suggest this eating plan. It's strict, and your medical team will watch you closely while you do it. The diet is high in fat and protein, and low in carbs -- a mix that makes your body burn fat instead of sugar. This creates changes in your brain that help lower your chances of seizures. More than half of children who follow this diet have at least 50% fewer seizures. Some even stop having them.

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Illustration showing VNS implant
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Treatment: Stimulation Therapies

There are several types:

  • VNS. It stands for vagus nerve stimulation. Sometimes it’s called a pacemaker for your brain. It sends electrical pulses through a large nerve in your neck.
  • Cortical stimulation. Surgeons place electrodes on the surface of your brain.
  • Deep brain stimulation. Electrodes placed deep in the brain can cut seizures by 50% or more for some people.
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Surgeon operating on epileptic patient
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Treatment: Surgery

It can often stop focal seizures when medicines are not effective. If the medical team finds that yours always begin in a single area of your brain, removing that area may stop them or make them easier to manage. Surgery also treats conditions that cause seizures, like a brain tumor.

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Person calling 911 for seizure emergency
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First Aid for Seizures

If you see someone having a seizure, take the following steps:

  • Time how long it lasts.
  • Clear the area of anything hard or sharp.
  • Loosen anything at the neck that may affect their breathing.
  • Turn them onto their side.
  • Put something soft beneath their head.
  • Don't place anything inside their mouth.

Call 911 if a seizure lasts more than 5 minutes, happens again, or the person has trouble breathing or waking up, is pregnant, is injured, has diabetes, heart disease, or has never had a seizure before. Also call 911 if the seizure happened in the water. 

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IV containing drugs for epilepsy
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Treatment for Status Seizures

Long-lasting or recurring seizures may be a condition called status epilepticus. It can cause serious problems and needs emergency treatment. To bring the seizures to an end quickly, hospitals often give drugs by IV, along with oxygen.

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Pregant woman in kitchen
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Epilepsy and Pregnancy

It’s safe for most women with the brain disorder to get pregnant. More than 90% of babies born to moms with epilepsy are healthy. But if you're planning to have a child, talk to your doctor first. Certain anti-seizure drugs can cause health problems in infants. Your medicine or its dose may need to be changed.

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Smiling girl and her dog
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Seizure Dogs

Service dogs can be trained to behave a certain way during a seizure. For example, the animal can lie next to the person to help prevent an injury. A dog can be trained to alert the parents during a child’s seizure.

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Man undergoing elpilepsy study
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Epilepsy Research

Doctors are looking for new treatments with two goals:

  • Help more people fully control their seizures.
  • Reduce treatment side effects.

Some researchers are also studying implantable devices that could alert you when a seizure is about to happen.

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Woman getting prescription filled
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Living With Epilepsy

You can enjoy a full, active life. Taking your medication on schedule may stop your seizures. If not, you can get other kinds of help. A specialist can come up with ways to curb the condition's impact on your life. The American Academy of Neurology and the Epilepsy Foundation have listings of neurologists who specialize in treating it, too.

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Sources | Medically Reviewed on 04/14/2021 Reviewed by Melinda Ratini, MS, DO on April 14, 2021


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Epilepsy Foundation: "About Epilepsy," "Absence Seizures," Accelerating New Therapies," "Complex Partial Seizures," "Education," "Epilepsy Bill of Rights," "Epilepsy and Pregnancy,” "Importance of EEG Tests," "Is an Emergency Room Visit Needed?" "Is Epilepsy Inherited?" "Ketogenic Diet," "Looking at the Brain," "Physical Fitness," "Types of Seizures," "Seizures, Medications and Pregnancy," "Seizure Dogs," "Tonic Seizures," "Seizures First Aid," "Simple Partial Seizures," "Status Epilepticus," "Surgery," "Vagus Nerve Stimulation," "What Causes a Seizure?" 

CDC: "Epilepsy," "Epilepsy: Frequently Asked Questions."

Epilepsy Therapy Project: “Vagus Nerve Stimulation.”

Kid’s Health: “Epilepsy.”

National Institute of Neurological Disorders and Stroke: "Epilepsy Information Page."

Nationwide Children's: "Seizures and Epilepsy in Children," "Seizure Treatment."

U.S. National Library of Medicine: “Generalized tonic clonic seizure.”

Reviewed by Melinda Ratini, MS, DO on April 14, 2021

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.