Rethinking the classification of acute status epilepticus : structural brain vs. systemic etiologies

Article Article scientifique Revue de la littérature Rethinking the classification of acute status epilepticus : structural brain vs. systemic etiologies eng 2026-01-20 author Xhepa Bernasconi Sophie Lucia Cherubina 444633 author Gullino Paola author De Stefano Pia 926484 Département des neurosciences cliniques (OTONO) 1763224 10.3389/fneur.2026.1763224 1664-2295 https://www.frontiersin.org/articles/10.3389/fneur.2026.1763224/full <p>Status epilepticus (SE) is a life-threatening neurological emergency whose modern conceptualization employs a multidimensional framework encompassing semiology, etiology, electroencephalographic features, and age. Among these, the etiological dimension is central, as it captures the underlying pathophysiology and critically informs both acute management and long-term prognosis. Current classifications define acute SE by its temporal proximity to a central nervous system insult, yet this approach groups heterogeneous mechanisms under a single category. Acute SE arising from structural brain injury involves downstream receptor and ionic dysfunction driven by inflammation, neuronal loss, glial activation, and network remodeling. In contrast, systemic etiologies, such as electrolyte disturbances, toxic exposures, or withdrawal states, primarily reflect transient disruptions in excitatoryinhibitory balance or ionic homeostasis. These mechanistic distinctions translate into meaningful clinical differences: structural causes are associated with higher mortality, greater seizure recurrence, and an increased risk of subsequent epilepsy. A more refined etiological classification distinguishing structural from systemic causes could better capture variations in pathophysiology, treatment response, and long-term outcomes. Such a framework may also guide decisions regarding the duration and intensity of antiseizure medication (ASM) therapy, a domain in which evidence remains limited. Whether early and sustained ASM treatment after SE due to structural brain injury can modify epileptogenesis is unknown, as no randomized controlled trials have directly addressed this question. Clarifying etiological subgroups may therefore facilitate targeted clinical and translational studies, improve prognostication, and ultimately support the development of interventions to prevent the transition from acute SE to chronic epilepsy.</p> Acute status epilepticus Classification Epileptogenesis Etiology Metabolic disturbances Pathophysiology Structural brain injury Systemic causes Dewey 616.8 Dewey 617 61 Département des neurosciences cliniques 226 63 Département d'anesthésiologie, pharmacologie, soins intensifs et urgences 229 false Frontiers in neurology 17 60da668f-732f-4c6b-9c09-981688326dc9 Article (Published version) Public Article_scientifique_from_unpaywall.pdf 792291 application/pdf CC BY-4.0 c5bf63757c24343da2ccccd2a56b94702cd1c52b9ca16ee299ed5cf1d06b8e80 openAccess Faculté de médecine / Section de médecine clinique / Département des neurosciences cliniques Faculté de médecine / Section de médecine clinique / Département d'anesthésiologie, pharmacologie, soins intensifs et urgences

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Rethinking the classification of acute status epilepticus : structural brain vs. systemic etiologies	Frontiers in neurology			2026	8	165

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Xhepa Bernasconi, Sophie Lucia Cherubina