Seizures are uncontrolled bursts of electrical activity in your brain that can cause temporary changes in your movements, consciousness, and behaviors.
Epilepsy is a medical condition characterized by recurrent seizures. The CDC estimates that
Atypical absence seizures are a specific type of seizure that most often begins in early childhood. People who experience these seizures become unresponsive for a short time and may seem like they’re daydreaming.
Learn more about atypical absence seizures, how to recognize them, what causes them, and treatment options.
An absence seizure causes a temporary lapse in your awareness that may resemble daydreaming or “spacing out.” They’re a type of generalized onset seizure, meaning they affect both sides of your brain at the same time.
Absence seizures tend to occur during childhood. Some people continue to have them throughout life or also experience other types of seizures as they get older.
An atypical absence seizure has features not typically observed in most absence seizures. They tend to:
- last longer
- start and stop more gradually
- be harder to manage
persist throughout your life
Atypical absence seizures also usually begin during childhood. But they are generally part of a developmental disorder or a more extensive epilepsy syndrome.
Atypical absence seizures are reported in up to
Atypical absence seizures can be difficult to recognize. A person experiencing a seizure may appear like they’re daydreaming and symptoms tend to appear gradually. Absence seizures typically last 15 to 30 seconds and sometimes longer.
Usual features of an atypical absence seizure include:
- the person may stare blankly but may be able to respond in a limited way
- they may blink their eyes, make chewing movements, or move their lips
- they may make small movements with their hands
- they won’t be aware of what’s going on around them and may not hear somebody talking to them.
- the person may seem out of character, confused, or agitatated
Atypical absence epilepsy is when a person experiences recurrent atypical absence seizures. Atypical absence seizures, however, can also be a feature of several types of epilepsy.
After an atypical absence seizure, a person will usually be awake but won’t have any memory of the seizure. They may feel tired or confused, especially if they had multiple seizures.
First aid isn’t needed for a single atypical absence seizure but may be required for if they also have other types, such as a clonic or atonic seizure.
The exact cause of atypical absence seizures remains unclear, but researchers think certain genes may cause changes in the brain that make some people more likely to experience them.
Situations that may trigger atypical absence seizures include:
- withdrawal from benzodiazepines, alcohol, or other CNS drugs
- some medications like isoniazid and antipsychotics
- poor sleep
- not following prescribed treatment
Atypical absence seizures generally start in early childhood and usually
Absence seizures in general are
Most of the time, people having atypical absence seizures aren’t in danger of hurting themselves, and their symptoms usually only last seconds. Normally, no particular intervention is needed, but it’s a good idea to stay with the person until their seizure is finished.
Seek medical treatment if you believe a person is experiencing a seizure for the first time, if they’re experiencing a new type of seizure, or if they become unconscious, develop injuries, or have trouble breathing.
You should call 911 or go to the nearest emergency room if:
- the person having the seizure is pregnant or has diabetes
- the seizure occurs in the water
- it lasts more than 5 minutes
- they remain unconscious or stops breathing after the seizure
- they develop a high fever
- they gets injured
- they have another seizure before regaining consciousness
- you believe someone is having their first seizure
Treatment for atypical absence seizures typically includes the following medications:
Ethosuximide is usually the first-line treatment. Lamotrigine is generally
These medications are also used to manage other types of seizures.
Some experts suggest that following a ketogenic diet may help manage symptoms, but more research is needed.
Brain surgery is sometimes performed in people with Lennox-Gastaut syndrome if other treatments fail.
A doctor diagnoses atypical absence seizures by reviewing your symptoms, medical history, family history, and measuring your brain electrical activity with a device called an electroencephalogram (EEG).
People with atypical absence seizures tend to have a particular pattern of brain activity characterized by slow spikes of activity between seizures at a frequency of
If you’re visiting the doctor for your child, it’s a good idea to take written notes of your child’s symptoms, or take a video if possible.
Atypical absence seizures tend to last about 15 to 30 seconds. When somebody has this type of seizure, they may seem like they’re daydreaming and become unresponsive.
If you think you or your child may be having seizures, it’s important to see a doctor. Different types of seizures are treated differently, so a proper diagnosis is necessary.