By: Nowshin Yeasmin Nishat

Absence and Atypical Absence Seizures

Definition

Absence seizures are a type of generalized non-motor seizure that mainly affects a person’s awareness for a short period of time. During an absence seizure, a person may suddenly stop what they are doing, stare blankly, and become unaware of their surroundings. These seizures happen because of abnormal electrical activity occurring in both sides of the brain at the same time. Usually, typical absence seizures last for about 5–20 seconds and end suddenly, with the person returning to normal immediately without confusion afterward.

Atypical absence seizures are different from typical absence seizures. They usually have a slower beginning and ending, last longer, and may not completely interrupt awareness. They are commonly found in children with other neurological or developmental conditions, such as Lennox-Gastaut syndrome. While both types affect awareness, atypical absence seizures are generally associated with more complex epilepsy conditions. (Fisher et al., 2017; Berg et al., 2010)

How Absence Seizures Affect the Brain and the Person

Impact on the Brain

Absence seizures occur because of unusual electrical activity in the brain. During a seizure, normal communication between different areas of the brain becomes temporarily disrupted, affecting attention and awareness. Electroencephalography (EEG) usually shows specific patterns of abnormal brain activity. In typical absence seizures, the EEG commonly shows generalized 3-Hz spike-and-wave discharges, which are considered a major sign of this condition. In contrast, atypical absence seizures usually show slower spike-and-wave patterns. Unlike tonic-clonic seizures, typical absence seizures generally do not cause a postictal state, meaning the person usually does not experience confusion or tiredness after the seizure ends. (Fisher et al., 2017; Engel, 2013)

Impact on the Person

Although absence seizures may appear less serious because they do not involve dramatic body movements, they can significantly affect a person’s daily life. Physically, individuals may experience brief staring episodes, eyelid fluttering, lip movements, or sudden pauses during activities. When seizures happen frequently, they can interrupt learning, communication, and daily tasks. From a social and cultural perspective, absence seizures are sometimes misunderstood. A child having seizures in a classroom may be considered inattentive, distracted, or simply daydreaming. Parents and teachers may not recognize the symptoms until a proper diagnosis is made. This misunderstanding can create frustration, academic difficulties, and emotional challenges for the individual. From an anthropological viewpoint, epilepsy is not only a medical condition but also a social experience. The way families, schools, and communities understand and respond to seizures can influence the person’s confidence, identity, and quality of life. Reducing stigma and increasing awareness are important parts of supporting people with epilepsy. (Jacoby, 1994)

Diagnostic Tests

Diagnosing absence seizures requires careful observation and medical evaluation. Doctors usually collect information from parents, teachers, or caregivers because they may notice unusual behaviors before diagnosis. Important details include how often seizures occur, how long they last, and whether the person loses awareness during the episode. The most important diagnostic tool is an electroencephalogram (EEG). It records electrical activity in the brain and helps identify seizure patterns. Typical absence seizures usually show generalized 3-Hz spike-and-wave activity, while atypical absence seizures show slower patterns. Doctors may also use hyperventilation during an EEG because it can trigger typical absence seizures and help confirm the diagnosis. Magnetic resonance imaging (MRI) is sometimes used to rule out structural problems in the brain, although MRI results are often normal in typical absence epilepsy. Blood tests may also be performed to exclude metabolic causes. (Fisher et al., 2017; Berg et al., 2010)

Treatment Options

Anti-Seizure Medications

Medication is the main treatment for absence seizures. Ethosuximide is often considered the first-choice medication for typical absence seizures because it specifically targets this type of seizure. Other medications, such as valproate and lamotrigine, may also be used depending on the person’s condition. These medicines work by reducing abnormal electrical activity in the brain and helping prevent seizures. Treatment for atypical absence seizures can be more complicated because they are often connected with broader epilepsy syndromes.

Lifestyle Management

Along with medication, lifestyle management plays an important role in controlling seizures. Maintaining regular sleep patterns, taking medication correctly, managing stress, and attending regular medical check-ups can help reduce seizure frequency. Identifying personal seizure triggers can also support better management.

Educational and Family Support

Medical treatment alone is not enough; social support is also essential. Teachers and family members need proper knowledge about absence seizures so they can respond appropriately. Classroom support, patience, and understanding can help children continue their education without feeling isolated. An anthropological perspective highlights that illness experiences are shaped by society and culture. When communities understand epilepsy better, stigma can be reduced, and individuals living with seizures can receive greater acceptance and support.

Advanced Treatment Options

For people with atypical absence seizures, especially those associated with severe epilepsy conditions, additional treatments may be considered. These may include the ketogenic diet, vagus nerve stimulation (VNS), or in some selected cases, epilepsy surgery. (Engel, 2013)

Conclusion

Absence and atypical absence seizures are neurological conditions that mainly affect awareness rather than causing visible convulsions. Although these seizures may appear minor, repeated episodes can influence learning, communication, emotional well-being, and social relationships. Early diagnosis and proper treatment are important for improving quality of life. However, managing absence seizures requires more than medical care. Support from families, schools, and communities plays an important role in reducing misunderstanding and stigma. A broader social understanding of epilepsy can help individuals live more confidently and participate fully in everyday life.

References 

Berg, A. T., Berkovic, S. F., Brodie, M. J., Buchhalter, J., Cross, J. H., van Emde Boas, W., Engel, J., French, J., Glauser, T. A., Mathern, G. W., Moshé, S. L., Nordli, D., Plouin, P., & Scheffer, I. E. (2010). Revised terminology and concepts for organization of seizures and epilepsies: Report of the ILAE Commission on Classification and Terminology, 2005–2009. Epilepsia, 51(4), 676–685. https://doi.org/10.1111/j.1528-1167.2010.02522.x

Engel, J. (2013). Seizures and epilepsy (2nd ed.). Oxford University Press.

Fisher, R. S., Cross, J. H., French, J. A., Higurashi, N., Hirsch, E., Jansen, F. E., Lagae, L., Moshé, S. L., Peltola, J., Roulet Perez, E., Scheffer, I. E., Zuberi, S. M., & Zuberi, S. M. (2017). Operational classification of seizure types by the International League Against Epilepsy: Position paper of the ILAE Commission for Classification and Terminology. Epilepsia, 58(4), 522–530. https://doi.org/10.1111/epi.13670

Jacoby, A. (1994). Felt versus enacted stigma: A concept revisited. Evidence from a study of people with epilepsy in remission. Social Science & Medicine, 38(2), 269–274. https://doi.org/10.1016/0277-9536(94)90396-4

Kwan, P., & Brodie, M. J. (2000). Early identification of refractory epilepsy. New England Journal of Medicine, 342(5), 314–319. https://doi.org/10.1056/NEJM200002033420503

Panayiotopoulos, C. P. (2008). A clinical guide to epileptic syndromes and their treatment (2nd ed.). Springer.