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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

814
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
814
Seizures: Classification01:13

Seizures: Classification

908
Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
908

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Related Experiment Video

Updated: Nov 14, 2025

Use of a Wireless Video-EEG System to Monitor Epileptiform Discharges Following Lateral Fluid-Percussion Induced Traumatic Brain Injury
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Post-traumatic epilepsy in adults: a nationwide register-based study.

Markus Karlander1,2, Johan Ljungqvist1,3, Johan Zelano4,5,6

  • 1Department of Clinical Neuroscience, University of Gothenburg Institute of Neuroscience and Physiology, Gothenburg, Sweden.

Journal of Neurology, Neurosurgery, and Psychiatry
|March 10, 2021
PubMed
Summary

Traumatic brain injury (TBI) significantly increases epilepsy risk, with severe injuries posing the highest threat. This study quantifies the considerable risk of post-traumatic epilepsy even after accounting for central nervous system comorbidities.

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Area of Science:

  • Neurology
  • Neurotrauma
  • Epileptology

Background:

  • Traumatic brain injury (TBI) is a primary cause of epilepsy.
  • Understanding the long-term risk of epilepsy following TBI is crucial for patient management.

Purpose of the Study:

  • To characterize the incidence and risk of epilepsy in adults after hospitalisation for TBI.
  • To investigate the association between TBI severity and epilepsy risk.

Main Methods:

  • A register-based cohort study including over 111,000 individuals hospitalised for TBI and over 325,000 matched controls.
  • Kaplan-Meier curves and Cox regression were used to estimate epilepsy risk and hazard ratios.
  • TBI severity was categorized, and analyses were adjusted for potential confounding factors.

Main Results:

  • The 10-year epilepsy risk was 4.0% after any TBI, compared to 0.9% in controls.
  • Epilepsy risk varied by TBI severity, ranging from 2.6% for mild TBI to 12.9% for focal cerebral injuries.
  • Hazard ratios increased with injury severity, reaching 16.0 for focal cerebral injuries. Central nervous system comorbidities, male sex, age, mechanical ventilation, and seizures during hospitalisation were identified as risk factors.

Conclusions:

  • The risk of post-traumatic epilepsy is substantial and persists even after adjusting for central nervous system comorbidities.
  • TBI severity is a significant determinant of post-traumatic epilepsy risk.