Generalized Onset Seizures

Characteristics of Generalized Onset Seizures

Generalized seizures affect both hemispheres simultaneously at onset and cause bilateral symptoms, according to the International League Against Epilepsy (ILAE) classification 1
They are subdivided into tonic-clonic, other motor, or nonmotor (absence) types, as classified by the International League Against Epilepsy (ILAE) 1
Generalized seizures typically present with symmetrical, synchronous movements, unlike the asymmetrical movements often seen in syncope, as noted by the European Society of Cardiology 3

Eyes are typically open during unconsciousness in generalized seizures, whereas they are often closed in psychogenic non-epileptic seizures (PNES), as observed by the European Heart Journal 4
Oral automatisms such as chewing, smacking, and blinking may be observed in patients with generalized seizures, as reported by the European Heart Journal 4
Duration of loss of consciousness (LOC) is typically longer in epileptic seizures (mean 74-90 seconds) compared to syncope (typically <30 seconds), according to the European Heart Journal 3

Tongue biting, especially on the lateral side, is more common in epileptic seizures than syncope, as noted by the European Heart Journal 4
Many movements are more suggestive of epilepsy than syncope, which typically has fewer movements, as reported by the European Heart Journal 3

Accurate classification of seizure types is crucial for appropriate treatment, accurate prognosis, and effective communication among healthcare providers, as emphasized by the International League Against Epilepsy (ILAE) 1