Neurology
SYSTEMATIC REVIEW
● Sys. Review
Review explores diagnostic uncertainty between seizure continuum and status epilepticus
Frontiers in Medicine
Published April 1, 2026
A recent medical review paper looked at a challenging area in neurology: the unclear line between a dangerous condition called status epilepticus (SE) and a brain wave pattern called the ictal-interictal continuum (IIC). The IIC pattern sits between normal and clearly abnormal seizure activity, making it hard for doctors to diagnose and decide on treatment.
The paper discusses why this gray area exists. It explores controversies, like how to interpret these brain wave patterns, whether they respond to seizure medications, and if they cause brain damage. The authors did not conduct a new study with patients or report specific safety data. Instead, they summarized existing debates among experts.
It's important to know this is a narrative review. That means it is a discussion of ideas and knowledge gaps, not a report of new scientific findings or treatment recommendations. The main point is that this area remains uncertain and controversial in medical practice. Readers should understand that this paper clarifies the questions doctors are asking, not the answers they have found.
View Original Abstract ↓
The ictal–interictal continuum (IIC) challenges the traditional dichotomous classification of electroencephalographic activity into ictal and interictal states and represents a major zone of diagnostic and therapeutic uncertainty in status epilepticus (SE). IIC is defined by rhythmic and periodic electroencephalographic (EEG) patterns that do not fulfill formal seizure criteria and occupies a gray zone in which the interpretation of what is ictal, treatment responsiveness, and risk of neuronal injury remains controversial. In this narrative review, we explored the boundaries between SE and the IIC, focusing on key controversies and paradoxes that emerge across electroclinical scenarios and neuroimaging findings. More specifically, we examine the time-locked electroclinical correlates and antiseizure medication responsiveness as markers of ictality, ongoing controversies in EEG-based definitions, and the role of peri-ictal neuroimaging abnormalities as complementary markers of metabolic burden. This review aims to summarize these topics and discuss key gaps for future research in the management of IIC.
