What Is A Seizure Aura? - Healthline

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What is a seizure aura?

An aura is the feeling you may have before the onset of a seizure. Typically, these occur before a focal seizure. However, research suggests that nearly 65 percent of people with generalized epilepsy may experience auras as well.

Auras are actually a type of seizure called focal aware seizures (FAS). When a FAS happens before another, more severe type of focal seizure, it’s considered an aura.

Auras can include many sensations, from sights, sounds, or smells to pain, numbness, or headaches.

What are the symptoms of a seizure aura?

While people who’ve had seizure auras sometimes find them hard to describe, what an individual feels during an aura varies depending on where the focal aware seizure occurs in their brain.

Types of seizure auras include:

Frontal lobe seizure auras

The frontal lobe of the brain is located in your forehead area. It controls things like emotional expression, your memories, language, judgment, problem-solving skills, and sexual behavior. Your frontal lobe is also responsible for much of your personality — it makes you who you are.

While auras, or focal seizures, in this area may be mild, there are also more severe seizures and seizure disorders that affect the frontal lobe, causing more significant symptoms.

Aura that start in the frontal lobe may include symptoms like:

feeling a wave or ripple that travels through your head
twitching or stiffening in your arm, hand, or other part of your body
headache or pain

Temporal lobe seizure auras

The temporal lobe of the brain is located behind your ears, and it controls auditory processing and making the sounds of spoken language meaningful.

Auras that start in the temporal lobe may include symptoms like:

a sensation in your stomach like you’re falling or riding a rollercoaster
feelings of déjà vu
an odd or unusual taste or smell
hearing unexplained music or a song
a sudden intense emotion like fear, happiness, or anxiety

Parietal lobe seizure auras

The parietal lobe is located near the center of the brain behind the frontal lobe. It contains the primary sensory area in which sensations in the skin like warmth, cold, and touch are processed.

The parietal lobe is also responsible for helping you understand written language and mathematics and judge spatial things like size, distance, and shapes.

Auras that start in the parietal lobe may include symptoms like:

tingling or numbness
feeling of something crawling on your skin
feeling as if one arm or leg is bigger or smaller than the other
feeling out of your body

Occipital lobe seizure auras

The occipital lobe of the brain is located at the back and base of the skull. It contains your primary visual cortex and receives direct input from your retina.

Your occipital lobe is responsible for your ability to see, read and understand written language, and process all types of visual information, like colors and shapes.

Auras that start in the occipital lobe may include symptoms like:

seeing things that aren’t there, hallucinations
seeing flashing or colored spots or lights

Why do people get seizure auras?

Some believe auras are simply a warning sign of a coming seizure, but many consider them small seizures. They can be detected during an electroencephalogram (EEG), a test that measures electrical signals in the brain.

Seizures and auras are both the result of a disruption in electrical signals in the brain.

Some experts believe that auras are caused when a seizure creates a new pathway in the brain that crosses an existing neural pathway for a feeling, sensation, smell, sight, or sound — and forms a permanent connection.

Once created, that neural connection acts as a precursor or warning for any seizure that occurs on that specific pathway. For some people, auras can be unusual things like a song, a color, or even a specific memory.

To understand why seizure auras happen, you also need to understand what causes seizures. There are a number of causes for seizures, including:

neurological conditions or infections
epilepsy
fever
imbalances with electrolytes
head injuries
abnormal blood sugar levels
alcohol withdrawal
drug use
drug withdrawal

What is a seizure?

Seizures are the body’s response to a change in the brain’s electrical system. Sometimes, this response is barely noticeable, and a person may appear to stare out into space. In other cases, the response is more severe, with violent jerking and shaking or a loss of consciousness.

Seizures are classified into types:

Focal onset seizures

Focal onset seizures, also called partial onset seizures, occur in one specific area of the brain.

Focal seizures may be broken down to three main types:

Simple focal seizures. These seizures occur in a small area of the brain and last a short period of time, 1 to 2 minutes. Individuals with simple focal seizures generally remain conscious and aware. They may experience twitching in a specific area of the body, experience a strange taste or smell, or feel frozen. Auras may be a type of simple focal seizure.
Complex focal seizures. This type of seizure is the most common type to follow an aura. Individuals having a complex focal seizure may be unresponsive, staring into space. They may also have involuntary actions, called automatisms, like lip smacking, rapid blinking, gulping, or vocalizations like grunting or shouting.
Secondary generalized seizures. These seizures start in one area of the brain but spread to both sides. Individuals having a secondary generalized seizure will have a focal seizure followed immediately by a generalized seizure. The initial seizure may be considered an aura.

Generalized onset seizure

Generalized onset seizures affect multiple areas of the brain at the same time.

This type of seizure has subtypes including:

tonic-clonic or grand mal seizures
absence or petit-mal seizures
atonic seizures

Unknown onset seizures

These seizures occur suddenly and for no known reason.

Can you prevent seizure auras?

Since auras are a precursor to another seizure, the strategies to prevent auras are similar to those preventing seizure. There’s no way to stop an aura from happening, but many people are able to identify triggers to seizure activity, like:

stress
sleep deprivation
depression
anxiety

Prodrome vs. aura

Prodromes are an early sign or warning of impending symptoms of an illness or condition. While auras usually occur too close to an impending seizure to stop it, prodromes offer more time to enact preventive strategies.

Prodromes are similar to auras but have symptoms or feelings that occur hours or days before a seizure. With prodromes, or in some cases where auras and seizures are spaced far enough apart, some people are able to head off seizures with a number of strategies, like:

relaxation
sleep
medications
avoiding alcohol or other triggers
positive thinking
deep breathing

What to do if you have a seizure aura

While an aura can be scary, triggering anxiety about an upcoming seizure, it can also be extremely useful in keeping you safe. Often with seizures, you may fall, lose balance, or become unconscious. Sometimes, this happens suddenly and in places where you may not be able to get help immediately.

Aura and prodromes give you time to sit down, find a safe location, or get help. Typically, people who have auras begin to notice a regular pattern of symptoms and patterns that can help them ensure their safety during a seizure.

How are seizures treated?

There are several options for treating seizures, although few options can cure seizures. Roughly a third of people who experience seizures continue to have them despite using medications. Here are a few of the treatment options that can be used to help control seizures:

Medication. There are many seizure medications available. Anti-epileptic medications are very helpful for most people with seizure disorders, although you may have to try a few different medications before finding the right solution. You may also have to switch medications every few years.
Surgery. If your doctors are able to pinpoint a specific part of your brain that is causing the seizures, they may be able to do surgery to fix or remove this part of the brain. This treatment often depends on where that area is located and what other functions that area controls.
Vagus nerve stimulation. This is a device that can be implanted under the skin in your chest to act as a pacemaker for the brain. Small electrical impulses are sent from the stimulator to the brain and have been found to be very effective in controlling seizure activity.
Diet and lifestyle changes. There are certain diets, like the ketogenic diet, that appear to have some impact on seizure control. You may also need to make lifestyle changes, like refraining from alcohol and drug use.

Can you stop having seizure auras?

If you get auras as part of your seizure disorder or epilepsy, there isn’t much data to suggest they can be stopped. You can try to prevent seizure activity in general by avoiding triggers or taking regular medications.

However, auras perform a vital role for people with seizures, as they can help them prepare for the seizure.

What’s the outlook for people with seizures?

How well your seizures are managed will depend a bit on what is causing them. If you have seizures because of drug or alcohol use, liver or kidney problems that lead to electrolyte imbalances, or are taking medications that can cause seizures, work with your doctor to resolve the underlying condition.

When your seizures are caused by epilepsy, it can be more difficult to get to the root of the problem. You can be diagnosed with epilepsy at any age, and while it can be controlled for many, it’s usually a lifelong condition.

A number of factors can affect your prognosis with epilepsy including:

age
family history
genetics
infections
pre-existing conditions
seizure patterns and severity
treatment strategies used
vascular disease

People who are diagnosed with epilepsy before age 12 generally have a better prognosis and may even grow out of the condition in adulthood. Increased age and concurrent health conditions can make a prognosis worse.

The takeaway

Seizures are a serious neurological condition caused by an interruption in electrical signals in the brain. This condition can cause you to fall, trip, or lose consciousness when they occur.

Auras are a type of seizure and sometimes your brain’s way to prepare or warn you of another, perhaps more severe seizure. People who experience auras can use the signal to find a safe location, take medication, or get help.

Auras can’t be stopped, but epilepsy and seizure disorders can be managed in many cases with medication or surgery.

How we reviewed this article:

SourcesHistoryHealthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

Brain: Cerebrum. (n.d.).https://training.seer.cancer.gov/brain/tumors/anatomy/brain.html
Dugan P, et al. (2014). Auras in generalized epilepsy.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4206156/
Epilepsy auras. (2017).https://epilepsysociety.org.uk/epilepsy-auras
The epilepsies and seizures: Hope through research. (2020).https://www.ninds.nih.gov/disorders/patient-caregiver-education/hope-through-research/epilepsies-and-seizures-hope-through
Focal aware seizures. (2018).https://epilepsysociety.org.uk/focal-aware-seizures
Navidhamidi M, et al. (2016). Vagal nerve stimulation for refractory epilepsy: A brief review.https://www.jneuropsychiatry.org/peer-review/vagal-nerve-stimulation-for-refractory-epilepsy-a-brief-review.html
The mysterious randomness of epileptic auras: They can arrive as color, memory, or a song. (2016).https://www.uchealth.com/articles/the-mysterious-randomness-of-epileptic-auras-they-can-arrive-as-color-memory-or-a-song/
Types of seizures. (2020).https://www.cdc.gov/epilepsy/about/types-of-seizures.htm

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Medically reviewed by Seunggu Han, M.D. — Written by Rachael Zimlich, RN, BSN on February 25, 2021

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What is a seizure aura?

What are the symptoms of a seizure aura?

Frontal lobe seizure auras

Temporal lobe seizure auras

Parietal lobe seizure auras

Occipital lobe seizure auras

Why do people get seizure auras?

What is a seizure?

Focal onset seizures

Generalized onset seizure

Unknown onset seizures

Can you prevent seizure auras?

Prodrome vs. aura

What to do if you have a seizure aura

How are seizures treated?

Can you stop having seizure auras?

What’s the outlook for people with seizures?

The takeaway

How we reviewed this article:

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