How long is a dangerous seizure

If you see someone who is having a seizure, stay calm. Although seizures seem to last a long time, they usually last less than 3 minutes.

A seizure can be scary to watch, especially if you've never seen one before. A seizure temporarily interferes with muscle control, movement, speech, vision, or awareness. It may cause a person's entire body to shake for a few seconds to a few minutes, and they may lose consciousness.

Seizures can be mild to severe, and they affect people differently. Even though you may feel helpless around someone having a seizure and find it difficult to watch, there are many things you can do to help.

Time the seizure, if you can. If the seizure lasts longer than 5 minutes or the person seizing is pregnant (no matter how long the seizure lasts), call 911 or other emergency services immediately.

  • Protect the person from injury.
    1. Keep them from falling if you can, or try to guide the person gently to the floor.
    2. Try to move furniture or other objects that might injure the person during the seizure.
    3. Try to position the person on their side so that fluid can leak out of the mouth.
  • Do not force anything, including your fingers, into the person's mouth.
  • Do not try to hold down the person.

    This can cause injury, such as a dislocated shoulder.

  • Provide a safe area where the person can rest after the seizure.
    1. Check the person for injuries.
    2. Turn the person onto their side, if you could not do so during the seizure.
    3. Loosen tight clothing around the person's neck and waist.
    4. Do not offer anything to eat or drink until the person is fully awake and alert.
    5. Stay with the person until they are awake and familiar with the surroundings.

      Most people will be sleepy or confused after a seizure.

You may be able to provide valuable feedback to the doctor treating the person having the seizure. Try to remember:

  • How the person's body moved.
  • How long the seizure lasted.
  • How the person acted before the seizure.
  • How the person acted immediately after the seizure.
  • Whether the person suffered any injuries from the seizure.

Seizures do not always require urgent care. But call 911 or other emergency services right away if:

  • The person having a seizure stops breathing for longer than 30 seconds. After calling 911 or other emergency services, begin rescue breathing.
  • The seizure lasts longer than 5 minutes.
  • The person seizing is pregnant (no matter how long the seizure lasts).
  • More than one seizure occurs within 24 hours.
  • The person having a seizure does not respond normally within 1 hour.
  • The person has new symptoms, such as trouble walking, speaking, or thinking clearly.
  • The person has a fever.
  • A seizure occurs after the person complains of a sudden, severe headache.
  • A seizure follows a head injury.
  • A person with diabetes has a seizure.
  • A seizure occurs after eating poison or breathing fumes.
  • The person complains of severe pain after waking up or develops a fever within 24 hours of the seizure.

Health Information Library

Feb 11, 2021 3:30 PM


How long is a dangerous seizure

A seizure is a medical condition that causes abnormal activity and/or body movements after a sudden and uncontrolled disturbance in your brain. Most people associate seizures with a condition called epilepsy, but you can experience a seizure even without having this condition. Seizures can occur after a head injury, after a stroke, or as a result of certain infections and illnesses, such as meningitis. It’s important to recognize the signs of a seizure and understand what to do if you or someone around you is experiencing one.

Warning signs of a seizure

The exact signs and symptoms of a seizure can vary a lot from one person to another. It’s important to be aware of your own body to spot the signs of a seizure as soon as possible.

The most common symptoms prior to seizure include:

  • A sound or tone that is the same each time
  • Changes in your hearing that might feel like you’re under water
  • Distortions in your surroundings, such as feeling very small or very large compared to the things and people around you
  • Feeling of butterflies or other sensation in your stomach
  • Déjà vu, where things seem very familiar like you’ve been there before
  • Jamais vu (the opposite of déjà vu), where things seem foreign or unfamiliar, even if you know you have been there before

Young children and babies can also experience seizures, but they may not be able to tell you what is going on. Common signs for children and babies include:

  • Frequent or sudden stomach pain
  • Complaints that things taste, smell, feel, look, or sound weird
  • Sleeping more than normal, or waking up confused and irritable
  • Jacknife movements in babies (jerking and grabbing with both arms)

What to do if you notice these signs

If you notice these symptoms and believe you are about to experience a seizure, try to get someplace safe where you will not get injured if you lose consciousness. If you are around others, tell them you think you might be experiencing a seizure so they can look for warning signs and help you stay safe.

How to help someone who is experiencing a seizure

Most of the time a seizure does not require urgent medical attention. The best thing you can do is make sure the person is safe and comfortable and will not get injured during the seizure by:

  • Helping them move into a safe position on the floor or a chair
  • Rolling them onto their side
  • Loosening any clothing that is tight around their neck or could restrict breathing (buttons, ties, etc.)
  • Removing eyeglasses
  • Moving them away from hard or sharp items that could cause injury, but only if you can do so safely
  • Staying with them until the seizure is over

Contrary to what you may have seen in the movies, there are also things you should never do when someone is having a seizure.

What to do after a seizure

Most seizures last between 30 seconds and two minutes and will not require any emergency medical attention. However, if someone is experiencing a seizure that lasts longer than two minutes, or they lose consciousness and it does not come back right after the seizure, you should call 911 right away. It’s also good to know the warning signs of other serious issues that would require immediate medical attention.

Find out as much as you can about what happened during the seizure from someone who was there. Keep track of seizures and potential triggers by writing down:

  • Foods you ate
  • Activities you were engaged in
  • Medications you are taking (prescription and over-the-counter)
  • Herbal or other supplements you are taking
  • How long the seizure lasts
  • What happened during the seizure (jerking movements, loss of consciousness, etc.)

When to see a neurologist

If you experience a seizure, it’s important to tell your primary care physician. He or she can help you determine if you need to see a neurologist and give you a referral if necessary. While it is possible to experience just one seizure the risk of having another seizure within two years of your first one is between 21% and 45%. Depending on the cause of the seizure, your risk could be even higher.

A neurology specialist will review your medical history, perform an exam, and use one or more diagnostic tools and tests to determine if you need ongoing treatment or are at higher risk for another seizure.

Medication & treatment options for seizures

There are several treatment options available to help control seizures. Medications successfully control symptoms in about two-thirds of people with seizures. For those who do not respond to medication, there are also surgical options available, including:

  • Minimally invasive surgery
  • Laser ablation surgery
  • NeuroPace RNS
  • Deep brain stimulation (DBS)
  • Vagus nerve stimulation (VNS)

Learn more about epilepsy diagnosis and treatment

University of Utah Health has a comprehensive Epilepsy Program to diagnose and treat patients who experience epilepsy. Learn more about the treatment options available and schedule an appointment with a neurologist today.

*Blog has been updated as of 10/17/2021. We recently learned that this piece was displaying incorrect information in a question box generated by Google Search Engine. We have taken steps to modify the content and reindex the page in hopes that the information in the answer box will be modified by the Google Search Engine.