Seizures in children can look dramatically different depending on the type. Some involve the classic full-body shaking most people picture, but many others are far subtler: a brief staring spell, a sudden head drop, or repetitive lip smacking that could easily be mistaken for daydreaming or a quirky habit. Knowing what to look for helps you recognize a seizure when it happens and respond appropriately.
Tonic-Clonic Seizures: The “Classic” Type
This is the type most people think of when they hear the word “seizure.” It has two distinct phases. The tonic phase comes first: your child’s body suddenly stiffens, sometimes with a cry or scream as air is forced out of the lungs. They may fall to the ground, and their skin can take on a bluish tint because their breathing is temporarily disrupted.
Seconds later, the clonic phase begins. The stiffness gives way to rhythmic jerking of the arms, legs, and sometimes the face. The jerking typically starts fast and gradually slows before stopping altogether. The whole event usually lasts one to three minutes. Afterward, your child will likely be sleepy, confused, or agitated for anywhere from 5 to 30 minutes as their brain recovers. This recovery window is called the postictal phase, and it’s a normal part of the process.
Absence Seizures: Brief Staring Spells
Absence seizures are easy to miss. A child suddenly “blanks out,” staring into space and not responding to their name or a wave in front of their face. There’s no falling, no jerking, no dramatic movement. The whole episode typically lasts 5 to 10 seconds (though it can range from 3 to 17 seconds), and then the child picks up right where they left off, often unaware anything happened.
If you look closely during an absence seizure, you may notice subtle signs: rapid eye blinking or fluttering, slight rhythmic movement of the eyebrows or mouth, lip smacking, or fidgety hand movements. These seizures can happen dozens of times a day, and teachers often notice them first because a child who seems to “zone out” repeatedly in class may actually be having seizures.
Focal Seizures: Unusual Repetitive Movements
Focal seizures start in one area of the brain, and what they look like depends on which area is involved. In some cases, a child stays fully aware but experiences jerking or twitching in one arm, one leg, or one side of the face. In other cases, awareness is impaired, and the child appears dazed or “out of it.”
The hallmark of many focal seizures is automatisms: involuntary, purposeless movements that look oddly intentional. Your child might smack their lips, chew on nothing, rub their hands together, pick at their clothing, or fumble with nearby objects. When the frontal lobes are involved, you might see more unusual movements like bicycling of the legs or repetitive rocking. These seizures can last anywhere from 30 seconds to a couple of minutes, and confusion afterward may take one to two hours to fully clear.
Infantile Spasms: A Pattern Unique to Babies
Infantile spasms typically appear between 3 and 12 months of age and look very different from other seizure types. The classic movement is sometimes called a “jackknife”: the baby’s body bends forward suddenly, knees pull up, and arms fling out to the sides. Each spasm lasts only one to two seconds, but they come in clusters, one after another, sometimes dozens in a row. A baby can have as many as 100 spasms in a single day.
These clusters are most common right after the baby wakes up from sleep. Because each individual spasm is so brief, parents sometimes mistake them for a startle reflex or colic. The clustering pattern is the key clue. If your baby repeatedly jolts in a rhythmic series upon waking, that warrants urgent evaluation, as early treatment for infantile spasms significantly affects outcomes.
Myoclonic and Atonic Seizures
Myoclonic seizures look like a sudden, intense muscle jerk, as if your child were shocked by static electricity. The jerk can affect the arms, legs, trunk, or head, and it’s over in a fraction of a second. A child might fling a spoon across the table or lurch forward without warning. These brief jolts can happen in isolation or in clusters.
Atonic seizures are the opposite. Instead of a jerk, there’s a sudden and complete loss of muscle tone. Every large muscle group goes limp at once, and the child drops to the floor like a ragdoll. These are sometimes called “drop attacks.” The seizure itself is brief, but the falls can cause injuries to the face, chin, or head, which is why children with frequent atonic seizures sometimes wear protective helmets.
Febrile Seizures: Triggered by Fever
Febrile seizures are the most common seizure type in childhood, affecting 2% to 5% of children in the U.S. and Europe. They occur between 6 months and 5 years of age, with a peak around 12 to 18 months. They’re triggered by fever (at or above 100.4°F), though the specific temperature that sets off a seizure varies from child to child. There’s no single “danger number” on the thermometer.
Most febrile seizures look like tonic-clonic seizures: stiffening followed by rhythmic jerking, lasting under five minutes. They are terrifying to watch but are generally not harmful and don’t cause brain damage. A simple febrile seizure involves the whole body, lasts less than 15 minutes, and happens only once during a 24-hour illness. A “complex” febrile seizure lasts longer, involves only one side of the body, or recurs within the same illness.
What the Recovery Period Looks Like
After a seizure ends, your child won’t simply “snap back.” The postictal recovery phase typically lasts 5 to 30 minutes but can stretch to hours depending on the seizure type. Common signs include drowsiness (many children fall into a deep sleep), confusion, difficulty speaking, headache, and nausea. Your child may not remember the seizure at all.
Some children experience temporary weakness on one side of the body after a focal or tonic-clonic seizure. This one-sided weakness can last minutes to hours, and in rare cases up to one to two days, before resolving completely. It can look alarming, resembling a stroke, but it’s a known postictal phenomenon that resolves on its own. The exception to all of this is absence seizures: children typically return to normal immediately, with no recovery period at all.
Events That Can Look Like Seizures but Aren’t
Not every episode of shaking, staring, or falling in a child is a seizure. Several common childhood events closely mimic seizures and can cause real panic.
- Breath-holding spells occur in about 5% of children aged 6 months to 5 years. A child cries hard (usually from pain, frustration, or a fright), holds their breath, turns blue or pale, and may briefly lose consciousness or go limp. The whole episode lasts under 60 seconds and resolves on its own. The key difference: there’s always a clear emotional trigger right before.
- Shuddering attacks look like a rapid tremor of the head that spreads to the shoulders and trunk, lasting only one to two seconds. They can happen many times a day, starting around 4 to 6 months of age, and are completely harmless. Eating, nursing, or urination can trigger them.
- Tics are repetitive movements of one or more muscle groups, most common between ages 5 and 10. Unlike seizures, tics are not truly episodic. They repeat many times throughout the day, the child stays fully conscious, and children can sometimes briefly suppress them on purpose.
- Fainting (syncope) involves a sudden loss of consciousness and muscle tone, which can look identical to certain seizures. The difference is that fainting episodes are typically brief, and the child regains full awareness quickly afterward, without the prolonged confusion or sleepiness that follows most seizures.
When a Seizure Becomes an Emergency
A seizure lasting 5 minutes or longer is classified as status epilepticus, a medical emergency. Current guidelines use that 5-minute mark (not the older threshold of 30 minutes) because the longer a seizure continues, the harder it becomes to stop and the greater the risk of harm. If your child has a seizure that doesn’t stop within 5 minutes, or if seizures repeat without your child returning to normal in between, call emergency services immediately.
For seizures that stop on their own in under 5 minutes, keep your child on their side, clear the area of hard objects, and don’t put anything in their mouth. Time the seizure from the moment it starts. If it’s your child’s first seizure, a medical evaluation afterward is important even if the episode was brief.