12 Key Signs of Seizures and How to Respond with Proper First Aid

Seizures can happen suddenly and may be frightening to witness, especially when someone who seemed completely fine suddenly becomes confused, unresponsive, or begins having uncontrolled movements.

According to the Centers for Disease Control and Prevention (CDC), about 1 in 10 people will experience a seizure at some point in their lifetime. Some seizures are short and relatively mild, while others can become medical emergencies. Knowing the warning signs and understanding basic first aid can help you respond safely.

A seizure occurs when there is abnormal electrical activity in the brain. The symptoms can vary considerably depending on which areas of the brain are involved. Generalized seizures affect networks across both sides of the brain and may cause loss of consciousness and full-body movements.

Focal seizures begin in a specific area or network of the brain. They may produce less obvious symptoms, such as unusual sensations, repetitive movements, brief confusion, or changes in speech.

Millions of people in the United States live with epilepsy, a condition in which seizures occur repeatedly. Seizures can have many possible causes, including brain injuries, infections, genetic conditions, strokes, tumors, and other medical problems.

Even though seizures are relatively common, many people do not know exactly what symptoms to watch for or what they should do when someone has one.

Recognizing the signs early can help ensure that the person stays safe and receives medical attention when necessary. In this guide, we’ll cover 12 important seizure signs, the different types of seizures, and the appropriate first aid steps to take.

Whether you are caring for someone with epilepsy, witnessing a seizure for the first time, or simply want to be prepared, understanding these signs can help you respond calmly and safely.

12 Key Seizure Signs From Subtle to Severe

Staring Spells

Staring spells are commonly associated with absence seizures. During one of these episodes, the person may suddenly stop what they are doing and stare blankly ahead.

Their eyelids may flutter, or their eyes may briefly move upward. During the episode, they may not respond when spoken to.

These episodes often last only a few seconds and may be mistaken for daydreaming or simply losing focus. The person usually does not remember the event afterward.

Automatic Behaviors (Automatisms)

Automatisms are repetitive, involuntary actions that may occur when a person’s awareness is impaired during a seizure.

Examples include lip-smacking, chewing, rubbing or picking at clothing, fumbling with nearby objects, or walking without a clear purpose.

The individual generally has little or no control over these movements and may not remember doing them later. Automatisms are particularly common with focal impaired awareness seizures.

Sensory Changes (Auras)

An aura is actually an early part of a focal aware seizure rather than a completely separate event. It may serve as a warning that a more noticeable seizure could follow.

Auras can produce unusual sensations involving different senses and may be different for every person.

Someone may see flashing lights or unusual shapes, hear buzzing or ringing, notice an unexplained smell, or experience an unusual taste.

Other possible sensations include a rising feeling in the stomach, sudden fear, an unfamiliar emotional feeling, or a strong sense of déjà vu.

Sudden Muscle Jerks (Myoclonic Jerks)

Myoclonic jerks are sudden, brief muscle contractions that can feel like a quick electrical shock or twitch.

They may affect the neck, shoulders, arms, or other parts of the body. Sometimes the movement is so mild that it looks like an ordinary twitch. In other cases, it may cause someone to drop an object or spill something they are holding.

These brief jerking movements are characteristic of myoclonic seizures.

Brief Muscle Stiffness (Tonic activity)

Tonic activity causes muscles to suddenly become stiff and tense. The stiffness may involve the entire body or only a particular area.

If someone is standing when this occurs, the sudden stiffening of their legs and trunk may cause them to fall. Tonic episodes are usually short and can sometimes be mistaken for a sudden loss of balance.

Speech Arrest

Speech arrest refers to a temporary inability to speak even though the person may remain aware of what is happening.

They may understand what others are saying and know what they want to communicate but be unable to produce words. This can happen when seizure activity affects areas of the brain involved in language.

Loss of Consciousness

Loss of consciousness is a common feature of some generalized seizures. The person may become completely unaware of their surroundings and fail to respond to voices, touch, or other stimulation.

This is different from the brief awareness interruption associated with absence seizures. In a more significant seizure, the person may remain unresponsive for a longer period.

Convulsions (Tonic-Clonic Movements)

Convulsions are among the most recognizable signs of a seizure. They commonly occur during tonic-clonic seizures, which were formerly called grand mal seizures.

The seizure usually begins with the tonic phase, during which the muscles suddenly become rigid. The person may fall to the ground.

This is followed by the clonic phase, which involves repeated and rhythmic jerking of the arms, legs, or entire body. The jaw may tighten, and breathing may temporarily become difficult. The lips or skin can sometimes appear bluish.

Falling Suddenly (Atonic Seizures)

Atonic seizures cause a sudden loss of muscle tone rather than muscle stiffening. As the muscles become limp, the person may unexpectedly collapse.

These episodes can last only a few seconds, but the sudden fall can result in serious injuries, especially to the head or face.

Crying Out or Screaming

Some people make a sudden cry, groan, or unusual sound at the beginning of a tonic-clonic seizure.

This sound does not necessarily mean the person is experiencing pain. It can happen because the muscles involved in breathing and the chest suddenly contract, forcing air through the vocal cords.

Loss of Bladder/Bowel Control

A person may lose control of their bladder or bowel during a significant generalized seizure.

This can happen because normal voluntary control is temporarily disrupted while the body is experiencing intense muscle activity and altered consciousness. Although it can be embarrassing for the person afterward, it is a recognized seizure symptom.

Post-Seizure Confusion (Postictal State)

The postictal state is the recovery period that follows a seizure. During this time, the person may appear confused, sleepy, disoriented, or extremely tired.

They may also experience a headache, muscle soreness, or difficulty remembering what happened.

The recovery period can last from several minutes to several hours depending on the type of seizure and the individual.

Types of Seizures

Seizures are generally classified into two main categories: focal and generalized. The classification is based largely on where the abnormal electrical activity begins in the brain.

Focal seizures begin within a specific area or network on one side of the brain. Generalized seizures involve networks on both sides of the brain from the beginning.

Because focal seizures start in a particular region, their symptoms can reflect the function of that area. For example, seizure activity involving a motor region may cause jerking in one limb, while activity in an area involved in vision may cause visual changes.

Focal seizures can also be described according to whether awareness is affected.

During a focal aware seizure, the person remains conscious and generally remembers the experience afterward. Auras, localized jerking, unusual sensations, and speech difficulties may occur.

During a focal impaired awareness seizure, awareness becomes affected. The person may look awake but seem confused or unresponsive and may perform repetitive automatic behaviors. They often have little or no memory of the episode.

Generalized seizures involve both sides of the brain from the start. They commonly affect awareness and may produce symptoms throughout the body.

Tonic-clonic seizures, absence seizures, myoclonic seizures, and atonic seizures are examples of generalized seizure types. Each produces a different pattern of symptoms depending on the brain networks involved.

The Relationship Between Specific Signs and Seizure Types

Certain seizure symptoms are strongly associated with particular seizure types. For example, staring spells are commonly seen with absence seizures, full-body convulsions occur with tonic-clonic seizures, and sudden shock-like jerks are characteristic of myoclonic seizures.

Recognizing these patterns can help healthcare professionals determine what type of seizure may have occurred and guide further evaluation and treatment.

Staring Spells and Absence Seizures

A blank stare with a brief loss of awareness is the most recognizable feature of an absence seizure.

The person may suddenly stop talking or moving and appear unaware for several seconds. Unlike many other seizures, there is usually no major loss of muscle tone.

Once the episode ends, the person generally returns to their normal activity without realizing that anything happened.

Convulsions and Tonic-Clonic Seizures

Tonic-clonic seizures are characterized by two major movement phases: muscle stiffening followed by rhythmic jerking.

During the tonic phase, the body becomes rigid and the person may fall. The clonic phase then produces repeated jerking movements.

Loss of consciousness is common, and the person may experience breathing changes, loss of bladder control, and a period of confusion or exhaustion afterward.

Muscle Jerks and Myoclonic Seizures

Myoclonic seizures produce quick, involuntary muscle jerks. The movements can affect one body part or several muscle groups at the same time.

The jerks usually occur very suddenly and last only a short time. They may sometimes appear as though the person simply twitched or startled.

Sudden Falls and Atonic Seizures

A sudden collapse caused by loss of muscle tone is the primary sign of an atonic seizure.

The person may briefly become completely limp and fall without warning. Because there is little time to protect themselves, these seizures can result in injuries.

Auras, Automatisms, and Focal Seizures

Auras can occur at the beginning of focal aware seizures and may cause unusual smells, tastes, visual experiences, emotions, or physical sensations.

Automatisms, on the other hand, are more commonly associated with focal impaired awareness seizures. The person may perform repetitive movements without consciously controlling them.

Correct First Aid Response When Observing Seizure Signs

The main goal of seizure first aid is to keep the person safe while allowing the seizure to finish naturally.

A useful approach is “Stay, Safe, Side”: stay with the person and time the seizure, protect them from nearby hazards, and place them on their side after the active convulsions have stopped.

Most seizures stop on their own. The focus should therefore be on preventing injuries, monitoring the person, and recognizing when emergency medical assistance is needed.

Safe and Helpful Actions During a Seizure

Stay Calm and Time the Seizure

Try to remain calm and start timing the seizure as soon as it begins.

Knowing how long the seizure lasts can provide important information to medical professionals. Many seizures end within a few minutes, but a seizure lasting more than five minutes is an emergency.

Keep the Person Safe

If possible, gently guide the person to the floor if they are standing or sitting.

Move hard, sharp, or dangerous objects away from them. Clear furniture, glass objects, decorations, and other hazards from the immediate area.

If other people are gathering around, ask them to give the person enough space.

Cushion Their Head

Place a soft, flat object such as a folded jacket underneath the person’s head.

This can help reduce the chance of a head injury if their head moves against the floor during the seizure. Do not attempt to hold their head down or restrain their neck.

Turn Them Gently Onto Their Side

After the active convulsions have ended, gently place the person on their side in the recovery position.

This position can help keep the airway clear and allows saliva or vomit to drain from the mouth rather than being inhaled.

Loosen Tight Clothing

If clothing around the neck is tight, gently loosen it.

A tie, scarf, or tight collar can be loosened to make breathing more comfortable while the person recovers.

Stay and Reassure

Remain with the person until the seizure has ended and they are awake and aware again.

It is common for someone to feel confused, tired, or frightened after a seizure. Speak calmly, explain what happened, and reassure them.

Do not give food or drinks until they are fully awake and able to swallow safely.

Dangerous Actions to Avoid During a Seizure

Some commonly repeated seizure myths can actually put the person at greater risk. The following actions should be avoided.

Do NOT Restrain the Person

Never try to hold a person down or force their movements to stop during a seizure.

Strong muscle contractions can make restraint dangerous and may result in injuries such as fractures or dislocations. Allow the seizure to run its course while protecting the person from nearby hazards.

Do NOT Put Anything in Their Mouth

Never place your fingers, a spoon, a wallet, or another object into the person’s mouth.

A person cannot swallow their tongue during a seizure. Putting something in their mouth can instead cause broken teeth, mouth injuries, or choking.

Do NOT Give Food or Water

Never give food, water, or medication by mouth while the person is having a seizure or before they are fully alert.

Their ability to swallow may be temporarily impaired, increasing the risk of choking or aspiration.

Do NOT Perform CPR

Breathing can temporarily change during a seizure, and the person may appear blue around the lips or skin.

Do not perform CPR while the seizure is still occurring. Once the seizure has completely stopped, check their breathing. If they are not breathing normally, begin CPR if you are trained to do so and follow emergency-dispatch instructions.

Finally, it is essential to know when a seizure becomes a medical emergency. Call 911 immediately if:

• The seizure lasts for more than five minutes.
• Another seizure begins soon after the first without the person recovering.
• The person does not regain consciousness or normal breathing after the seizure.
• The person is seriously injured during the seizure.
• The seizure occurs in water.
• The person is pregnant, has diabetes, or this is their first known seizure.

Seizure Diagnosis

Diagnosing a seizure involves several steps. Doctors first try to determine whether the event was actually a seizure and then investigate what may have caused it.

A detailed medical history and neurological examination are important parts of the evaluation. Witness descriptions can also be extremely useful because the person may not remember everything that happened.

An electroencephalogram, or EEG, is commonly used to evaluate electrical activity in the brain. Small electrodes placed on the scalp record brainwave patterns, and certain abnormal patterns may provide evidence of seizure activity.

Doctors may also use brain imaging to look for structural causes. An MRI can identify abnormalities such as tumors, previous injuries, scarring, or developmental changes.

A CT scan may be used in emergency situations when rapid imaging is needed. Blood tests may also help identify infections, metabolic abnormalities, or other medical conditions that could contribute to seizure activity.

What Are Common Triggers That Can Provoke a Seizure?

People with epilepsy may notice that certain situations make seizures more likely. Triggers vary from one person to another, so identifying individual patterns can be useful when managing the condition.

Missing or incorrectly taking prescribed anti-seizure medication is an important potential trigger. Taking medication according to the prescribed schedule can help maintain seizure control.

Sleep deprivation is another common trigger. Not getting enough sleep may make the brain more susceptible to abnormal electrical activity, making consistent sleep especially important.

Emotional stress, anxiety, illness, fever, and physical strain may also contribute to seizures in some people.

Flashing or flickering lights can trigger seizures in people with photosensitive epilepsy, although this type of trigger is relatively uncommon.

Alcohol and recreational drugs can also affect brain activity and may interfere with seizure control. Heavy alcohol use and alcohol withdrawal can both increase seizure risk.

Seizure Signs vs. Stroke Signs

Seizures and strokes are both serious neurological events, but they happen for different reasons and can produce different symptoms.

A seizure results from abnormal electrical activity in the brain, while a stroke occurs when blood flow to part of the brain is interrupted or when a blood vessel in the brain bleeds.

A generalized tonic-clonic seizure may begin suddenly with loss of consciousness followed by stiffening and rhythmic jerking.

Stroke symptoms are more commonly associated with sudden loss of neurological function. The F.A.S.T. warning signs include facial drooping, arm weakness, and speech difficulties. A stroke can sometimes cause a seizure, but seizures are not the main feature of most strokes.

Seizures may involve positive symptoms such as jerking, stiffening, unusual sensations, or repetitive behaviors. Stroke symptoms more often involve loss of function, such as weakness, numbness, or difficulty speaking.

Seizures commonly last from seconds to several minutes and may be followed by temporary confusion, tiredness, or headache.

Stroke symptoms generally persist and require urgent treatment. Because the two conditions can sometimes overlap, sudden neurological symptoms should always be taken seriously.

Can You Have Seizure-like Signs Without Having Epilepsy?

Yes. Some medical conditions can produce episodes that look like epileptic seizures even though the person does not have epilepsy.

These events are sometimes called seizure mimics. Correctly identifying them is important because their causes and treatments differ from those of epilepsy.

Psychogenic non-epileptic seizures (PNES) are one example. They can produce physical symptoms that resemble seizures but are not caused by abnormal epileptic electrical activity in the brain. Specialized evaluation, including video-EEG when appropriate, can help distinguish PNES from epileptic seizures.

Syncope, or fainting, is another common seizure mimic. It occurs when blood flow to the brain temporarily decreases. Some people may have brief jerking movements during fainting, which can make the episode look like a seizure.

Other conditions that may resemble seizures include certain migraines with aura, sleep disorders such as narcolepsy with cataplexy, and movement disorders involving tics or tremors.

A medical evaluation, often by a neurologist, can help determine the actual cause of seizure-like episodes.

FAQs

1. How long do seizures last?

Many seizures last only a few minutes or less and stop without intervention. The exact duration depends on the type of seizure.

A seizure that continues for more than five minutes is considered a medical emergency because prolonged seizure activity can cause serious complications. Repeated seizures without recovery between them also require emergency medical attention.

2. What does a seizure feel like?

The experience varies depending on the type of seizure.

Some people experience an aura before a larger seizure. This may involve an unusual smell or taste, visual changes, dizziness, nausea, fear, déjà vu, or another strange sensation.

During a seizure, a person may experience impaired awareness, loss of consciousness, jerking, stiffening, or other involuntary movements. Afterward, they may feel tired, confused, disoriented, or have difficulty remembering the event.

3. What helps seizures go away?

Many seizures stop naturally within a few minutes. The safest immediate response is generally to protect the person from injury, time the seizure, and monitor them.

People who have recurrent seizures may be prescribed anti-seizure medications to reduce their frequency. Depending on the type and severity of epilepsy, doctors may also consider other treatments, such as dietary therapy, vagus nerve stimulation, or surgery.

Getting enough sleep, taking prescribed medication correctly, and identifying personal triggers can also help with seizure management.

4. What are 5 foods to avoid that cause seizures?

There is no universal list of five foods that cause seizures in everyone. Individual triggers can vary, and food alone is not usually the sole cause of seizures.

Some substances or dietary factors may affect certain people, including:

• Caffeine – Large amounts may affect the nervous system and could contribute to seizures in some susceptible individuals.
• Alcohol – Heavy drinking and especially alcohol withdrawal can increase seizure risk.
• Highly processed foods – Some individuals may notice sensitivity to particular additives, although evidence varies.
• Refined sugars – Rapid changes in blood sugar can be a concern, particularly for people with diabetes or certain metabolic conditions.
• High-sodium foods – Very high sodium intake can contribute to fluid or electrolyte problems in some circumstances.

Keeping a record of foods, medications, sleep, and other possible triggers can help identify personal patterns. Discuss suspected triggers with a healthcare professional.

5. What are the first signs of a seizure?

Early seizure symptoms depend on the seizure type.

For some people, the first sign is an aura. This may involve an unusual smell or taste, visual changes, déjà vu, sudden fear, dizziness, or an unfamiliar sensation.

Other people may experience brief staring, confusion, unusual movements, or muscle twitching. More severe seizures may quickly progress to loss of consciousness and convulsions.

Recognizing personal warning signs can be particularly helpful for people who regularly experience focal seizures.

6. Does your brain go back to normal after a seizure?

For many people, brain function gradually returns to normal after a seizure. However, the recovery period can take time.

During the postictal phase, a person may experience confusion, memory problems, difficulty speaking, headache, or significant tiredness. These symptoms can last from minutes to several hours.

Repeated prolonged seizures can increase the risk of complications, which is why appropriate diagnosis and treatment are important for people with recurring seizures.

7. What are bad signs after a seizure?

Some symptoms after a seizure are expected, but certain signs require urgent medical attention.

These include:

• A seizure lasting longer than five minutes or repeated seizures without recovery.
• Serious difficulty breathing after the seizure.
• Severe or persistent confusion that does not improve.
• A significant head injury, bleeding, or suspected broken bone.
• Severe headache, unusual neurological symptoms, or other concerning changes.

Emergency medical care should be sought when serious or unusual symptoms occur after a seizure.

8. What are the four stages of a seizure?

Seizures are sometimes described using four stages:

1. Prodromal Stage – Some people experience mood, behavior, or physical changes hours or even days before a seizure.
2. Aura – An aura is an early seizure symptom that may involve unusual smells, tastes, visual changes, déjà vu, or other sensations. Not everyone experiences an aura.
3. Ictal Phase – This is the seizure itself, when symptoms such as altered awareness, muscle stiffening, jerking, or other seizure activity occur.
4. Postictal Phase – After the seizure, the person may experience confusion, tiredness, memory problems, difficulty speaking, or other recovery symptoms.

Not every person experiences all four stages.

9. What happens if you leave seizures untreated?

Untreated recurring seizures can increase the risk of complications. One serious concern is status epilepticus, in which seizure activity continues for an extended period or repeated seizures occur without adequate recovery.

Seizures can also lead to injuries from falls, burns, accidents, or other uncontrolled movements.

Depending on their cause and frequency, uncontrolled seizures can interfere with daily activities and quality of life. Appropriate medical evaluation and treatment can help reduce seizure frequency and associated risks.

Conclusion

Seizures can be frightening, but knowing what they look like and understanding the correct first aid response can make it easier to protect someone during an episode.

The signs can range from subtle staring spells, unusual sensations, and brief muscle jerks to severe convulsions and loss of consciousness. Recognizing these differences can help people respond appropriately and know when emergency medical attention is needed.

Anyone who experiences a first seizure, repeated seizures, or concerning seizure-like symptoms should receive appropriate medical evaluation. With proper diagnosis, treatment, and awareness of potential triggers, many seizure disorders can be effectively managed.