A to Z: Seizure, Tonic-Clonicenparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgA tonic-clonic seizure (also called a grand mal seizure) is a sudden attack that brings on intense muscle spasms and loss of consciousness. It is caused by abnormal brain activity and affects the entire body.grand mal seizure, convulsion, epilepsy, tonic-clonic seizure, generalized seizure, muscle spasms, loss of consciousness, aura, tonic, clonic08/14/201304/11/201909/02/20194a629ff8-4dad-436f-82fe-5a20153bd666https://kidshealth.org/ws/RadyChildrens/en/parents/az-seizure-grand-mal.html/<p><em>May also be called: Grand Mal Seizure</em></p> <p>A tonic-clonic&nbsp;<a href="https://kidshealth.org/ws/RadyChildrens/en/parents/seizure.html/">seizure</a> is a sudden attack that brings on intense muscle spasms and loss of consciousness. It is caused by abnormal electrical activity in the <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/brain-nervous-system.html/">brain</a> and affects the entire body.</p> <h3>More to Know</h3> <p>A&nbsp;<span style="line-height: 16.8px;">tonic-clonic</span>&nbsp;seizure can happen at any age. It's most commonly associated with <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/epilepsy.html/">epilepsy</a> but can also be caused by low blood sugar, stroke, infections, traumatic head injuries, drug and alcohol withdrawal, and other underlying conditions. It can be a one-time or recurring event.</p> <p>Often, an aura (vision, taste, smell, or sensory changes) will signal an oncoming seizure.</p> <p>A&nbsp;<span style="line-height: 16.8px;">tonic-clonic</span>&nbsp;seizure occurs in two phases and usually only lasts for a few minutes. First, loss of&nbsp;consciousness occurs. This is&nbsp;followed by convulsions, or violent muscle contractions. The person may also bite the cheek or tongue, lose bladder or bowel control, clench the teeth or jaw, or have a blue skin color.</p> <p>Following the seizure, a person&nbsp;will probably be sleepy and confused with no memory of the event. A severe headache afterward&nbsp;is also common. It may take a few hours before the person starts feeling normal.</p> <h3>Keep in Mind</h3> <p>Anyone experiencing a tonic-clonic seizure should seek medical help. Treatment will depend upon the cause and often includes the use of anti-seizure medications.</p> <p>While medications can minimize the effects of seizures, living with chronic seizures can still be frightening and disruptive to daily life. Support groups and online forums are valuable resources for people with epilepsy and other seizure disorders.</p> <p><em>All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.</em></p>
Brain and Nervous SystemThe brain controls everything we do, and is often likened to the central computer within a vast, complicated communication network, working at lightning speed.https://kidshealth.org/ws/RadyChildrens/en/parents/brain-nervous-system.html/1e2a5004-5865-4069-97fd-5488c31075b9
EpilepsySeizures are a common symptom of epilepsy, a condition that affects millions of people worldwide. Learn all about epilepsy, including what to do if you see someone having a seizure.https://kidshealth.org/ws/RadyChildrens/en/teens/epilepsy.html/85df049a-dc59-41a5-b92c-421ea2d711be
Febrile SeizuresFebrile seizures are full-body convulsions caused by high fevers that affect young kids. Although they can be frightening, they usually stop on their own and don't cause any other health problems.https://kidshealth.org/ws/RadyChildrens/en/parents/febrile.html/85d50f3c-9caa-4f88-9a3c-e55ab0a9b537
First Aid: SeizuresAlthough seizures can be frightening, usually they last only a few minutes, stop on their own, and are almost never life-threatening.https://kidshealth.org/ws/RadyChildrens/en/parents/seizures-sheet.html/b5b828f7-d921-49cf-9b8a-79401d2378e9
HypoglycemiaWhen blood glucose levels drop too low, it's called hypoglycemia. Very low blood sugar levels can cause severe symptoms that require immediate treatment.https://kidshealth.org/ws/RadyChildrens/en/parents/hypoglycemia.html/a5a7783c-d631-4896-baa4-6f28cc0d82bd
SeizuresSeizures are caused by a sudden surge of electrical activity in the brain. Find out what you need to know about seizures and what to do if your child has one.https://kidshealth.org/ws/RadyChildrens/en/parents/seizure.html/17184860-dea1-4cd4-95ba-3cf34539cd44
StrokesThis "brain attack" happens when blood flow to the brain stops, even for a second. Often, kids who have a stroke can learn to use their arms and legs and speak again through brain retraining.https://kidshealth.org/ws/RadyChildrens/en/parents/strokes.html/5539d27a-a31c-459d-9bfc-94b934761cda
What Is Hypoglycemia?Lots of people wonder if they have hypoglycemia, but the condition is not common in teens. Get the facts on hypoglycemia.https://kidshealth.org/ws/RadyChildrens/en/teens/hypoglycemia.html/68e1b77a-ed33-44fb-b4d2-acd4b5bd7f7f
When Blood Sugar Is Too LowWhen blood glucose levels drop too low, it's called hypoglycemia. Very low blood sugar levels can cause severe symptoms that need to be treated right away.https://kidshealth.org/ws/RadyChildrens/en/teens/blood-sugar-low.html/c07944f1-52e3-4d8f-8145-1cd35c261cd3
Word! SeizureYou might hear a seizure called a convulsion, fit, or spell.https://kidshealth.org/ws/RadyChildrens/en/kids/word-seizure.html/70e445af-ba78-41bd-94f7-293962fa407b