The pathogenesis of febrile seizures: is there a role for specific infections?

J H van Zeijl1, R A Mullaart, J M D Galama

  • 1Department of Medical Microbiology, Public Health Laboratory Friesland, PO Box 21020, 8900 JA Leeuwarden, The Netherlands. jan.van.zielj@lvf.nl

Insights

Febrile seizures (FS) involve more than just fever, with genetics and infections playing key roles. Understanding these factors, including viral neuroinvasion, is crucial for preventing epilepsy.

Area of Science:

  • Neurology
  • Pediatrics
  • Infectious Diseases

Background:

  • Febrile seizures (FS) are commonly triggered by fever, but not solely caused by it.
  • A strong familial predisposition exists for FS, suggesting a genetic component.
  • Genetic polymorphisms can influence infection severity, linking genetics and infections in FS pathogenesis.

Purpose of the Study:

  • To review the multifaceted causes of febrile seizures.
  • To explore the roles of fever, heredity, cytokines, and infection types in FS.
  • To highlight the diagnostic challenges and potential mechanisms of viral involvement in FS.

Main Methods:

  • Literature review focusing on fever, genetics, cytokines, and infection.
  • Analysis of modern diagnostic techniques, including PCR for viral detection in CSF.
  • Examination of the distinction between FS and acute encephalitis.

Main Results:

  • Fever's height, cause, and metabolic effects are important factors in FS.
  • Heredity and cytokines significantly contribute to FS development.
  • Advanced diagnostics reveal frequent viral detection in CSF, complicating FS vs. encephalitis differentiation.

Conclusions:

  • FS pathogenesis is complex, involving fever, genetic predisposition, and infections.
  • Viral neuroinvasion or intracerebral activation may cause FS.
  • Further research into these viral mechanisms is vital for therapeutic interventions to prevent epilepsy.

Related Concept Videos

Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Seizures l: Introduction01:20

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...
Seizures: Classification01:13

Seizures: Classification

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:
Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...